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1. 发明专利

JP2009060711A Vehicle alternator and rectifier 有权
标题翻译：车辆交换机和整流器
公开(公告)号：JP2009060711A
公开(公告)日：2009-03-19
申请号：JP2007225693
申请日：2007-08-31
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： SAITO MASATO , ISHIKAWA TOSHIO , KOKUBU SHUICHI
IPC分类号： H02K19/36 , H02K5/18 , H02K9/02 , H02K9/06 , H02K11/04
摘要： PROBLEM TO BE SOLVED: To provide a vehicle alternator and a rectifier, capable of efficiently cooling a rectifying element in the rectifier in a limited space in an engine room. SOLUTION: The vehicle alternator includes: frames 1, 2 for supporting a stator 5; a rectifier 3 having an electrically connected rectifying element 3c for rectifying the AC power outputted from a stator winding 4a and provided with heat dissipation plates 3a, 3b for cooling the rectifying element 3c; and a fan for flowing a cooling air into the rotor 5 through the rectifier 3. A plurality of heat dissipation fins 3f extending in the substantially axial center direction of the rotor 5 are provided on the heat dissipation plates 3a, 3b, a gap is provided in the substantially axial direction between each of the adjacent heat dissipation fins of the plurality of heat dissipation fins 3f, and the plurality of heat dissipation fins 3f consist of at least two kinds of heat dissipation fins having different lengths in the substantially axial center direction. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种车辆交流发电机和整流器，其能够在发动机室的有限空间中有效地冷却整流器中的整流元件。解决方案：车辆交流发电机包括：用于支撑定子5的框架1,2; 整流器3具有电连接的整流元件3c，用于对从定子绕组4a输出的AC电力进行整流，并设置有用于冷却整流元件3c的散热板3a，3b; 以及通过整流器3将冷却空气流入转子5的风扇。在散热板3a，3b上设置有在转子5的大致轴向中心方向上延伸的多个散热片3f，在多个散热片3f的相邻的各散热片之间的大致轴向上，多个散热翅片3f由在大致轴向中心方向上具有不同长度的至少两种散热片构成。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2009296807A Vehicular charging generator and rectifier thereof 有权
标题翻译：车辆充气发电机及其整流器
公开(公告)号：JP2009296807A
公开(公告)日：2009-12-17
申请号：JP2008148716
申请日：2008-06-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KOKUBU SHUICHI , MASUMOTO MASATOSHI , KUNII KEIJI
IPC分类号： H02P9/04 , H02M7/12
CPC分类号： H02J7/1492 , H02P9/02 , H02P9/48 , H02P2101/45 , Y02T10/92
摘要： 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
摘要翻译：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

3. 发明专利

JPH06276691A CONTROLLING APPARATUS FOR CHARGING GENERATOR FOR VEHICLE 失效
公开(公告)号：JPH06276691A
公开(公告)日：1994-09-30
申请号：JP5983593
申请日：1993-03-19
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： TAKAHASHI NAOYUKI , TSUCHIYA MASANORI , KOKUBU SHUICHI
IPC分类号： H02J7/14 , H02J7/24
摘要： PURPOSE:To realize a control apparatus for charging generator for vehicle which prevents errornous alarm due to increase of output from a charging generator, issues an alarm when a terminal of a charging generator or voltage detecting terminal is disconnected and also automatically sets an output voltage of the charging generator to a value near the normal value. CONSTITUTION:Under the normal condition, an output V75a of a first voltage dividing circuit 75 is larger than an output V76a of a second voltage dividing circuit 76, making conductive a transistor 771. A selection circuit 79 selects a voltage 75a and then supplies it to a comparator 80. The comparator 80 compares the reference voltage with a voltage 75a to supply an output signal to a transistor 71 in view of controlling a voltage of the terminal S to a preset voltage. When the voltage detecting terminal or output terminal is disconnected, voltage 75a becomes smaller than the voltage 76a (75a

4. 发明专利

JPH06197473A CONTROLLING APPARATUS FOR CHARGING GENERATOR FOR VEHICLE 失效
公开(公告)号：JPH06197473A
公开(公告)日：1994-07-15
申请号：JP34036092
申请日：1992-12-21
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： KOKUBU SHUICHI , MASUMOTO MASATOSHI , MARUMOTO KATSUJI
IPC分类号： H02J7/16 , H02J7/24 , H02P9/30
摘要： 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.

5. 发明专利

JP2001238494A CHARGING GENERATOR FOR VEHICLE 失效
公开(公告)号：JP2001238494A
公开(公告)日：2001-08-31
申请号：JP2000050032
申请日：2000-02-25
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： KOKUBU SHUICHI , HIKITA SAKAE , MASUMOTO MASATOSHI , HONDA YOSHIAKI
IPC分类号： H02J7/14 , H02M7/06 , H02P9/04
摘要： PROBLEM TO BE SOLVED: To provide a charging generator for a vehicle which can issue an alarm to a driver, when a failure is generated in a rectifier of the charging generator for a vehicle. SOLUTION: A failure-detecting means 127 outputs an alarm, when deviation between an output voltage of a generated voltage detecting means 124, and an output voltage of an average phase voltage detecting means 125 is higher than a set, first deviation voltage when a failure is not generated in a rectifier element, or lower than a second deviation voltage set, when a failure is not generated in the rectifier element.

6. 发明专利

JPH0823643A CONTROLLER FOR CHARGING GENERATOR FOR VEHICLE 失效
公开(公告)号：JPH0823643A
公开(公告)日：1996-01-23
申请号：JP15567394
申请日：1994-07-07
申请人： HITACHI LTD , HITACHI CAR ENGINEERING KK
发明人： MASUMOTO MASATOSHI , TAKAHASHI NAOYUKI , KOKUBU SHUICHI
IPC分类号： H02J7/14 , H02J7/24 , H02P9/30
摘要： PURPOSE:To provide a controller for a charging generator of a vehicle which can prevent erroneous operation of a charge lamp when a charging generator is operated in an idling state. CONSTITUTION:A controller for charging generator of a vehicle is constituted in such a way that, when the voltage at an L-terminal drops, the base current of a transistor 86 becomes smaller and the voltage across the collector and emitter of the transistor 86 rises so that the set value of a regulated voltage can rise a little and power generation can be restarted, and then, the voltage at the L-terminal can rise. Therefore, when the voltage at the L-terminal starts to drop due to the idling of the engine, the set value of the regulated voltage rises a little and power generation is started and, as a result, the erroneous operation of a charge lamp can be prevented, since the base current of the transistor 86 becomes smaller and the voltage across the collector and emitter of the transistor 86 rises.

7. 发明专利

JPH07135740A CONTROLLER OF CHARGING GENERATOR FOR CAR 失效
公开(公告)号：JPH07135740A
公开(公告)日：1995-05-23
申请号：JP27926993
申请日：1993-11-09
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： MASUMOTO MASATOSHI , TAKAHASHI NAOYUKI , KOKUBU SHUICHI
IPC分类号： H02J7/14 , H02J7/24 , H02P9/30
摘要： PURPOSE:To lower the current driving capacity of transistors for limiting flowing currents and for a charging pilot lamp and scale down chip size, and to enable a change into a monolithic IC for control at low cost by providing a constant-voltage power supply generating voltage lower than battery voltage as the driving power supply of these transistors. CONSTITUTION:A surge waveform generated at a time when the terminal B of a battery 2 and load 3 are interrupted simultaneously during the power generation of a charging generator 1 and a load dump surge is generated is applied to terminals B, S, L. Surge voltage applied to the terminal B is absorbed by a resistor 24, a capacitor 21 and a Zener diode 25 in a constant-voltage power supply VCC at that time. The base currents of a transistor 12 for limiting flowing currents and a transistor 13 for driving a charging pilot lamp are supplied through resistors 14, 15 respectively from the constant-voltage power supply VCC, and the base currents of these transistors 12, 13 are not increased even when high voltage such as the load dump surge is applied to the terminal B.

8. 发明专利

JPH07115737A CONTROL DEVICE FOR VEHICLE CHARGING GENERATOR 失效
公开(公告)号：JPH07115737A
公开(公告)日：1995-05-02
申请号：JP25802393
申请日：1993-10-15
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： TSUCHIYA MASANORI , MASUMOTO MASATOSHI , KOKUBU SHUICHI
IPC分类号： H02J7/16 , H02J7/24 , H02P9/30
摘要： PURPOSE:To prevent the effects of noises and to perform secure starting and stop by inserting a capacitor between the terminals of a comparator for the voltage at the terminal of a display lamp and the value obtained by dividing the voltage between the base and the emitter of a transistor for driving the display lamp with a resistor. CONSTITUTION:A terminal voltage VL of a charging display lamp 6 is grounded through the series circuit of a noise canceling capacitor 371 and a resistor 367. A voltage VL at the connecting point of the capacitor 371 and the resistor 367 is connected to one terminal of comparator 366 and to the gate of a transistor Tr 13 for driving the display lamp through a resistor 368. The voltage VL is inputted into the-f terminal of the comparator 366. When a key switch 5 of a battery 2 is turned ON, the voltage VL is dropped. The voltages VR and VL are similarly dropped, and a power supply voltage Vcc is stably supplied. Trs 370 and 31 are turned ON, and the charging display lamp 6 is continuously lit. When the switch is turned OFF, the voltage VL becomes 0, and the lamp becomes OFF. Thus, the power supply is started and stopped positively even at low temperature and high temperature without obstruction with noises.

9. 发明专利

JPH0622471A CONTROLLER OF GENERATOR FOR VEHICLE 失效
公开(公告)号：JPH0622471A
公开(公告)日：1994-01-28
申请号：JP17710092
申请日：1992-07-03
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： MASUMOTO MASATOSHI , TAKAHASHI NAOYUKI , MAEDA YUJI , KOKUBU SHUICHI
IPC分类号： H02J7/24 , H02P9/30
摘要： PURPOSE:To provide a controller of a generator for a vehicle in which a current limit value at the time of operating a torque limiter for limiting a field current to a set value can be accurately obtained. CONSTITUTION:The controller of a generator for a vehicle comprises a latching circuit 20 for outputting an output of a current detector 19 in synchronization with a clock CLK from a triangular wave generator 17 of a PWM (pulse-width- modulation) voltage controller 25 so that a switching frequency of a power transistor 12 for turning field current ON, OFF does not become a PWM frequency or more of a voltage control system. Thus, since drive torque required by a generator 1 can be effectively suppressed to a set value even at the time of a cold temperature, a life of a belt for driving a generator can be improved while obtaining an original output of the generator 1 at the time of a high temperature, squeaking of the belt is suppressed, and stalling of an engine can be prevented.

10. 发明专利

JPH11234921A CONTROLLER FOR CHARGING GENERATOR FOR VEHICLE 失效
公开(公告)号：JPH11234921A
公开(公告)日：1999-08-27
申请号：JP2950198
申请日：1998-02-12
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： TAKAHASHI NAOYUKI , HIKITA SAKAE , KOKUBU SHUICHI
IPC分类号： H02J7/24 , H02J7/16 , H02P9/14 , H02P9/30
摘要： PROBLEM TO BE SOLVED: To reduce the amount of battery voltage drop to the same level as a generator which generates large power, by adjusting the amount of increase in the control current of a power switch for field current control immediately after electric load application and before actuation of a deenergizing means, based on the state of power generation by a generator. SOLUTION: Generated current to be increased before start of deenergization control at the time of load application is made almost constant regardless of the generated current capacitance of a generator. In a generator different in generated current capacitance, the results of measurement of the amount of increase in field current required to increase the generated current by 10 A immediately after load application and the field current before load application are indicated. In regions with less generated current, the field current and the output current are almost proportional to each other. In regions with larger generated current, the output is not increased even by increasing the field current because the generated current is in proximity to saturation point. For the reason, the generated current can be made almost constant regardless of the state of the generated current by setting the amount of increase in field current to be increased immediately after load application and before start of deenergization control.

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