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    • 1. 发明专利
    • Backpack power supply
    • 背包电源
    • JP2014017952A
    • 2014-01-30
    • JP2012153124
    • 2012-07-06
    • Hitachi Koki Co Ltd日立工機株式会社
    • YOSHINARI TAKUYAFUJISAWA HARUHISANINAI YUKI
    • H02J7/00B25F5/00H01M10/44
    • H01M2/1022A45F2003/045A45F2003/146B25F3/00B25F5/00H01M10/4257H01M2220/30H02J7/0004H02J7/0042H02J7/0054H02J7/0068
    • PROBLEM TO BE SOLVED: To provide a backpack power supply 1 mounting a secondary battery 51.SOLUTION: The backpack power supply 1 includes a case 5, a secondary battery 51 housed in the case 5, an output terminal 5a connected with the secondary battery 51, a switching element 522 located in a current path formed between the secondary battery 51 and the output terminal 5a, a sub-power switch 66 extended from the case 5 so as to direct turn-off of the switching element 522, a battery side microcomputer 526 for turning the switching element 522 off when turn-off of the switching element 522 is directed from the sub-power switch 66, and a main power switch 53 provided in the case 5 and located on the current path closer to the secondary battery 51 side than the switching element 522. The battery side microcomputer 526 is supplied with drive power from a point between the main power switch 53 and the switching element 522 on the current path.
    • 要解决的问题:提供安装二次电池51的背包电源1.解决方案:背包电源1包括壳体5,容纳在壳体5中的二次电池51,与二次电池51连接的输出端子5a 位于二次电池51和输出端子5a之间的电流路径中的开关元件522,从壳体5延伸以引导开关元件522的断开的副电源开关66,电池侧微型计算机 526,用于在从副电源开关66指示开关元件522的断开时关闭开关元件522;以及设置在壳体5中并且位于更靠近二次电池51的电流路径上的主电源开关53 电池侧微型计算机526从当前路径上的主电源开关53和开关元件522之间的点供给驱动电力。
    • 2. 发明专利
    • 電源装置
    • 电源设备
    • JP2014236559A
    • 2014-12-15
    • JP2013115814
    • 2013-05-31
    • 日立工機株式会社Hitachi Koki Co Ltd
    • YOSHINARI TAKUYA
    • H02P7/29
    • 【課題】交流電源が設置されていない場所でも、既存のコードレス電動工具を長時間駆動可能な電源装置を提供する。【解決手段】電源装置10は、モータ7を内蔵する電動工具20に給電するために、二次電池1と、モータ7に流れる電流を検出するための出力電流検出回路3と、検出された電流を積算するためのマイコン5と、モータに流れる電流が増加するにつれて段階的若しくは連続的にモータ7に供給される電圧を減少させる出力電圧制御回路4と、装置側プラス端子2a及び装置側マイナス端子2bの少なくともいずれか一方の温度を検出するサーミスタ2cとを有し、マイコン5は、積算された電流積算値が所定値を超えた場合には、電動工具20に供給する電流が減少するように制御するとともに、サーミスタ2cにより検出された温度が所定値を超えた場合には、電動工具20への給電を遮断するよう制御する。【選択図】図1
    • 要解决的问题:提供即使在没有安装交流电源的地方也能长时间驱动现有的无绳电动工具的电源装置。解决方案:为了向电动工具供电 20,其中包括电动机7,电源装置10包括:二次电池1; 用于检测流过马达7的电流的输出电流检测电路3; 用于对检测到的电流进行积分的微计算机5; 输出电压控制电路4,其随着流过电动机的电流逐渐或连续地降低供给电动机7的电压; 以及至少检测器件侧正端子2a和器件侧负端子2b之一的温度的热敏电阻2c。 控制微型计算机5,使得当集成电流值超过规定值时,提供给电动工具20的电流降低,并且还被控制,使得当由电动工具20检测到的温度被切断时,向电动工具20供电的电力被切断 热敏电阻2c超过规定值。
    • 5. 发明专利
    • Waveform converter and power-supply device having the same
    • 波形转换器和具有相同功能的电源设备
    • JP2013046469A
    • 2013-03-04
    • JP2011181836
    • 2011-08-23
    • Hitachi Koki Co Ltd日立工機株式会社
    • NAKANO YASUSHIYOSHINARI TAKUYAFUNABASHI KAZUHIKOSHIMA TOSHIHIRO
    • H02M7/48
    • PROBLEM TO BE SOLVED: To provide a waveform converter and a power supply device having the same.SOLUTION: A sine-wave adapter 1 includes: an input terminal A to which a voltage is applied; a booster circuit 16 boosting the input voltage; an inverter circuit 18 converting the waveform of the boosted voltage into a sine wave; a microcomputer 21 controlling the booster circuit 16 and the inverter circuit 18: an output terminal B outputting a voltage converted into the sine wave; and a voltage detection circuit 14 detecting the voltage inputted to the input terminal A. The microcomputer 21 inhibits the operation of the booster circuit 16 when the voltage detected by the voltage detection circuit 14 falls within a boost inhibition range.
    • 要解决的问题:提供一种波形转换器和具有该波形转换器的电源装置。 解决方案:正弦波适配器1包括:施加电压的输入端子A; 升压电路16,提升输入电压; 将升压电压的波形转换为正弦波的逆变器电路18; 控制升压电路16和逆变器电路18的微计算机21:输出转换成正弦波的电压的输出端子B; 以及检测输入到输入端子A的电压的电压检测电路14.当由电压检测电路14检测到的电压落在升压抑制范围内时,微计算机21禁止升压电路16的动作。 版权所有(C)2013,JPO&INPIT
    • 8. 发明专利
    • Inverter device
    • 逆变器装置
    • JP2014033509A
    • 2014-02-20
    • JP2012171529
    • 2012-08-01
    • Hitachi Koki Co Ltd日立工機株式会社
    • YOSHINARI TAKUYA
    • H02M7/48
    • PROBLEM TO BE SOLVED: To provide an inverter device in which the efficiency under a light load can be enhanced compared with that when the inductance value of a wave-shaping circuit is constant, regardless of the magnitude of a load.SOLUTION: Under heavy load, the inductance value of a wave-shaping circuit 21 is decreased (the output impedance of an inverter device 1 is decreased) in order to feed a large amount of current, but since the peak current increases in that case, the switching frequency of a switching circuit 16 is increased to suppress the peak current. Under light load, a large amount of current is not fed to the load, and thereby the peak current is suppressed by increasing the inductance value of the wave-shaping circuit 21. Furthermore, the switching frequency of the switching circuit 16 is decreased in order to reduce the switching loss.
    • 要解决的问题:提供一种逆变器装置,其中与波形整形电路的电感值恒定时相比,能够提高轻负载时的效率,而与负载的大小无关。解决方案:在重负载下 ,波形整形电路21的电感值减小(逆变器装置1的输出阻抗减小),以便馈送大量电流,但是由于峰值电流在这种情况下增加,所以开关频率 开关电路16增加以抑制峰值电流。 在轻负载下,不会将大量电流馈送到负载,从而通过增加波形整形电路21的电感值来抑制峰值电流。此外,开关电路16的开关频率按顺序减小 以减少开关损耗。
    • 9. 发明专利
    • Power supply unit and temperature threshold setting method
    • 电源单元和温度阈值设置方法
    • JP2014018013A
    • 2014-01-30
    • JP2012155197
    • 2012-07-11
    • Hitachi Koki Co Ltd日立工機株式会社
    • YOSHINARI TAKUYA
    • H02M3/28
    • PROBLEM TO BE SOLVED: To provide a power supply unit and temperature threshold setting method, capable of achieving flexible temperature protection as compared to a case where a switching element is protected with a single temperature threshold.SOLUTION: For an abrupt temperature slope (time change) of FET 132 (switching element) of a switching system of DC-DC converter, a temperature threshold of FET 132 is set low, at 80°C to protect the FET 132. Temperature thresholds of the FET 132, when a load is high and is low, set (change) low, at 100°C and set (change) high, at 120°C, respectively.
    • 要解决的问题:提供与开关元件以单个温度阈值保护的情况相比,能够实现柔性温度保护的电源单元和温度阈值设置方法。解决方案:对于突然的温度斜率(时间变化 )DC-DC转换器的开关系统的FET 132(开关元件),FET 132的温度阈值在80℃被设置为低,以保护FET 132.当负载高时,FET 132的温度阈值 并且在100℃下分别为低,设定(变化)低,设定(变化)高。