会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明专利
    • Charging device
    • 充电设备
    • JP2005143290A
    • 2005-06-02
    • JP2004356943
    • 2004-12-09
    • Hitachi Car Eng Co LtdHitachi Ltd株式会社日立カーエンジニアリング株式会社日立製作所
    • SAKAMOTO MITSUZOIWAMURA MASAHIROMASUMOTO MASATOSHI
    • H02H7/06H02J7/14H02J7/16H02M7/12H02M7/21H02P9/04H02P9/30
    • Y02T10/92
    • PROBLEM TO BE SOLVED: To provide high efficiency and high reliability for an alternator for a vehicle. SOLUTION: In a charging device for charging a battery by rectifying the electric current from an AC output terminal by a bridge circuit consisting of an upper arm transistor and a lower arm transistor and generating rectified output voltage between a reference voltage terminal and a rectification output terminal, a comparator for comparing the rectified output voltage with a specified voltage is provided for gate control circuits of the upper arm transistor and the lower arm transistor, so as to perform control for increasing penetrating current from the upper arm transistor through the lower arm transistor if the rectified output voltage reaches at least the specified voltage. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:为车辆的交流发电机提供高效率和高可靠性。 解决方案:在用于通过由上臂晶体管和下臂晶体管构成的桥接电路整流来自交流输出端子的电流来对电池充电的充电装置中,并且在参考电压端子和基准电压端子之间产生整流的输出电压 整流输出端子,用于将整流后的输出电压与指定电压进行比较的比较器,用于上臂晶体管和下臂晶体管的栅极控制电路,以便执行用于增加来自上臂晶体管的穿透电流的控制 整流输出电压达到规定电压以上时, 版权所有(C)2005,JPO&NCIPI
    • 6. 发明专利
    • Charger
    • 充电器
    • JP2005210895A
    • 2005-08-04
    • JP2005039958
    • 2005-02-17
    • Hitachi Car Eng Co LtdHitachi Ltd株式会社日立カーエンジニアリング株式会社日立製作所
    • SAKAMOTO MITSUZOIWAMURA MASAHIROMASUMOTO MASATOSHI
    • H02H7/06H02J7/14H02J7/16H02M7/12H02M7/21H02P9/04H02P9/30
    • Y02T10/92
    • PROBLEM TO BE SOLVED: To enhance the efficiency and reliability of an alternator for vehicle.
      SOLUTION: The charger charges a battery by rectifying a current from the AC output terminal of an alternator through a bridge circuit consisting of an upper arm transistor and a lower arm transistor and generating a rectified output voltage between a reference voltage terminal and a rectification output terminal. The transistor has a first main terminal, a second main terminal and a control terminal wherein a diode is provided between the first main terminal and the second main terminal. In normal operation, the battery is charged by controlling the control terminal such that the transistor is turned on when a current is fed between the first main terminal and the second main terminal. When the rectified output voltage drops to a specified voltage or below, the control terminal is turned off and the battery is charged by feeding a current between the first main terminal and the second main terminal through a diode.
      COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提高车辆交流发电机的效率和可靠性。

      解决方案:充电器通过由交流发电机的交流输出端子通过由上臂晶体管和下臂晶体管组成的桥接电路整流电流来对电池充电,并在参考电压端子和基极电压端子之间产生整流的输出电压 整流输出端子。 晶体管具有第一主端子,第二主端子和控制端子,其中二极管设置在第一主端子和第二主端子之间。 在正常操作中,通过控制控制端子来使电池充电,使得在第一主端子和第二主端子之间馈送电流时晶体管导通。 当整流输出电压下降到指定电压以下时,通过二极管在第一主端子和第二主端子之间馈电,控制端子被断开,电池充电。 版权所有(C)2005,JPO&NCIPI

    • 8. 发明专利
    • Vehicular charging generator and rectifier thereof
    • 车辆充气发电机及其整流器
    • JP2009296807A
    • 2009-12-17
    • JP2008148716
    • 2008-06-06
    • Hitachi Ltd株式会社日立製作所
    • KOKUBU SHUICHIMASUMOTO MASATOSHIKUNII KEIJI
    • H02P9/04H02M7/12
    • H02J7/1492H02P9/02H02P9/48H02P2101/45Y02T10/92
    • PROBLEM TO BE SOLVED: To provide a stable MOSFET rectifying operation which is not affected by a power generation condition from a start of an engine in a rectifier 2 having a MOSFET. SOLUTION: An output VS obtained by adding respective phase voltages VU, VV, VW and a power generation voltage VBR are compared by COM1. During a period of VBR>VS, a timing signal VT (Fig.3(c)) having a cycle with an electrical angle of 120 degrees is obtained. In synchronism with a rise in logical products AND1 and AND2 based on comparison results VH-ON (Fig.3(d)) of a phase voltage VU and a power generation voltage VB and comparison results VL-ON (Fig.3(h)) of the phase voltage VU and a GND potential, flip-flops FF1 and FF2 are operated. Then, a gate signal VHGD of an upper-stream side MOSFET and a gate signal VLGD of a lower-stream side MOSFET are output to perform a MOSFET rectifying operation. COPYRIGHT: (C)2010,JPO&INPIT
    • 解决的问题:提供一种稳定的MOSFET整流操作,其不受来自具有MOSFET的整流器2中的发动机起动的发电条件的影响。 解决方案:通过将各相电压VU,VV,VW和发电电压VBR相加获得的输出VS通过COM1进行比较。 在VBR> VS的期间,获得具有120度电角度的周期的定时信号VT(图3(c))。 基于相电压VU和发电电压VB的比较结果VH-ON(图3(d))和比较结果VL-ON(图3(h)),逻辑积AND1和AND2的上升同步, )相位电压VU和GND电位时,触发器FF1和FF2被操作。 然后,输出上游侧MOSFET的栅极信号VHGD和下游侧MOSFET的栅极信号VLGD,进行MOSFET整流动作。 版权所有(C)2010,JPO&INPIT
    • 9. 发明专利
    • CONTROLLING APPARATUS FOR CHARGING GENERATOR FOR VEHICLE
    • JPH06197473A
    • 1994-07-15
    • JP34036092
    • 1992-12-21
    • HITACHI LTDHITACHI AUTOMOTIVE ENG
    • KOKUBU SHUICHIMASUMOTO MASATOSHIMARUMOTO KATSUJI
    • H02J7/16H02J7/24H02P9/30
    • PURPOSE:To realize a controlling apparatus of a charging generator for vehicles, wherein it responds to the power generation capacity of the charging generator for the vehicle with high accuracy, it prevents an engine breakdown, the creak of a belt and the like and its power generation efficiency is enhanced. CONSTITUTION:A control apparatus 2 is provided with a transistor 21 which controls a field current, with a power-supply circuit 23, with a voltage control circuit 24, with a number-of-revolutions detection circuit 25 for an armature winding 12 and with a current detection resistance 29 which detects the field current. In addition, the controlling apparatus 2 is provided with a current detection circuit 26 which controls the field current by comparing an output signal (i) from an emitter for the transistor 21 with a reference signal which is changed by output signals (f), (g) from the detection circuit 25, with an AND circuit 27 which takes the AND of a voltage control signal from the control circuit 24 and of a current control signal (j) from the detection circuit 26 and which outputs a field-current and battery-voltage control signal and with a lamp drive circuit 28 which turns on and off a lamp 35 by an output signal (e) from the detection circuit 25.