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1. 发明专利

JP2002171680A BATTERY CHARGING METHOD AND POWER SUPPLY 失效
公开(公告)号：JP2002171680A
公开(公告)日：2002-06-14
申请号：JP2000362021
申请日：2000-11-29
申请人： ORIGIN ELECTRIC , NIPPON TELEGRAPH & TELEPHONE
发明人： NAKAHARA TAKASHI , KANO KIMIYOSHI , YAMAZAKI MIKIO , SUZUKI TORU
IPC分类号： H02J7/02 , H01M10/44 , H02J7/00
摘要： PROBLEM TO BE SOLVED: To charge a battery groups each consisting of several battery blocks by using a small charging power supply which has a capacity only for a battery block and quickly charge only the normal batteries which require charging. SOLUTION: This is a divided charging system for each battery block. Utilizing the off-charging period between the time-division charging for each battery block, connection test is carried out on the batteries before charging to exclude those determined abnormal, thus making it possible to charge the batteries which require charging in a short time.

2. 发明专利

JP2001286013A POWER FEEDING APPARATUS 失效
公开(公告)号：JP2001286013A
公开(公告)日：2001-10-12
申请号：JP2000101860
申请日：2000-04-04
申请人： SHINDENGEN ELECTRIC MFG , NIPPON TELEGRAPH & TELEPHONE , ORIGIN ELECTRIC
发明人： HIRASHIMA HIKARI , HIROSE KEIICHI , YAMAZAKI MIKIO , NODA ATSUCHIKA
IPC分类号： H05K7/20 , H02B1/28 , H02B1/56
摘要： PROBLEM TO BE SOLVED: To provide a power feeding apparatus which can prevent entry of water thereto even during the outdoor maintenance work. SOLUTION: This power feeding apparatus 1 comprises a power supply case 3 which can cover the power supply unit 10, and a power supply box 2 including a power supply cover 3 which can cover a power supply unit 10. A plurality of heat radiation fins 25 are provided at the surface of the power supply box 2, and a water exhaust groove 27 is provided between the fins 25 to guide the water in the direction far from the power supply cover 4.

3. 发明专利

JPH06245377A MULTI-INPUT POWER SOURCE 失效
公开(公告)号：JPH06245377A
公开(公告)日：1994-09-02
申请号：JP3362393
申请日：1993-02-23
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： ENDO KUNI , TAKEUCHI AKIRA , YAMAZAKI MIKIO , YAMASHITA TAKASHI
IPC分类号： H02J1/10 , H02M3/28
摘要： PURPOSE:To supply an arbitrary amount of power to a load simultaneously from an input source and to provide a small size and high reliability by interconnecting a plurality of the input sources by one transformer and synchronously operating all switch elements. CONSTITUTION:The multi-input power source comprises switching units 2, 5 connected to a plurality of input sources 1, 5 to convert an input DC voltage into a pulse voltage, and a plurality of input windings 10, 11 connected to the units 2, 6. The power source further comprises one transformer 90 having the plurality of input windings 10, 11 and at least one output winding 12, and a rectifying.smoothing circuit 13 connected to the winding 12. Further, the power source comprises a load 18 connected to the circuit 13, and a controller 191 for controlling voltage, current or power of the input or output. Switch elements 3, 4, 7, 8 of the units 2, 6 are synchronously operated. Accordingly, arbitrary amounts of power can be simultaneously supplied to outputs from the plurality of the sources l, 5.

4. 发明专利

JPH02177719A TRANSFORMER COUPLED DRIVING CIRCUIT 失效
公开(公告)号：JPH02177719A
公开(公告)日：1990-07-10
申请号：JP33261588
申请日：1988-12-28
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAZAKI MIKIO , ISHII SHUNJI
IPC分类号： H02M3/155 , H03K17/61
摘要： PURPOSE:To avoid malfunction of a transformer coupled driving circuit due to vibration without any loss by providing an auxiliary winding to a drive transformer and connecting the auxiliary winding to a power MOSFET so as to be short-circuited via a short-circuit rectifier when the power MOSFET is to be turned off. CONSTITUTION:Since a short-circuiting switch element Q3 is turned off, an auxiliary winding N4 is opened and the winding N4 does not affect the circuit operation at an ON-period Ton of a transformer coupled driving circuit, the circuit operation is similar to that of a conventional circuit. The short-circuiting switch element Q3 is in the on-state at an OFF-period Toff. When each winding voltage takes a positive polarity due to vibration, the short-circuiting diode D2 is turned on, the winding N4 is short-circuited and a current IN4 of the winding N4 keeps the vibration current having flowed till just before to the other windings. As a result, the impedance of all the windings of the driving transformer T is made zero, the free vibration is stopped thereby preventing malfunction of the power MOSFET Q2.

5. 发明专利

JPS58179124A No-break power supply system 失效
公开(公告)号：JPS58179124A
公开(公告)日：1983-10-20
申请号：JP5975082
申请日：1982-04-12
申请人： Nippon Telegraph & Telephone
发明人： KOYASHIKI TOORU , YAMAZAKI MIKIO
IPC分类号： H02H7/18 , H02J9/06

6. 发明专利

JP2003235162A POWER SUPPLY SYSTEM AND CONTROL METHOD THEREFOR 审中-公开
公开(公告)号：JP2003235162A
公开(公告)日：2003-08-22
申请号：JP2002026423
申请日：2002-02-04
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAKEUCHI AKIRA , YANAI TOSHIAKI , OTSU SATOSHI , YAMAZAKI MIKIO , YAMASHITA NOBUHIKO , TAZUME KUNITOSHI , HIRAOKA YASUSHI
IPC分类号： H02J3/38 , H01M8/00
摘要： PROBLEM TO BE SOLVED: To realize a power supply system capable of supplying power in correspondence with load power to solve problems that in small-scale power demand in households and the like, load greatly fluctuates; therefore, if generating equipment, such as a fuel cell, and a storage battery are used together with an electric power system, the rise characteristics of the fuel cell are insufficient for a rapid fluctuations in load and the fuel cell is exposed to undue stress, and that the fuel cell generates power regardless of the load fluctuation and this shortens the cell life. SOLUTION: Supply current or supply power to a plurality of loads is detected, and the result of the detection is fed back to a controller. The controller detects the state of power generation by the fuel cell and the state of operation of a power converter, and exercises control so that required power demanded by the load devices is generated and supplied. Further, the controller estimates the fluctuation in power demand in each load, and exercises control so that required power is ensured. In addition, to cope with pulse-like peaked demand, a capacitor is installed. COPYRIGHT: (C)2003,JPO

7. 发明专利

JP2003230279A AC-DC POWER CONVERTER 审中-公开
公开(公告)号：JP2003230279A
公开(公告)日：2003-08-15
申请号：JP2002023989
申请日：2002-01-31
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： TAKEUCHI AKIRA , YANAI TOSHIAKI , OTSU SATOSHI , YAMAZAKI MIKIO , YAMASHITA NOBUHIKO , TAZUME KUNITOSHI , HIRAOKA YASUSHI
IPC分类号： H02M7/12 , H02M7/21
摘要： PROBLEM TO BE SOLVED: To solve the problem that, while several methods are employed, for a bidirectional power converter, of which the one uses an inverter formed of a transformer and the other one uses an inverter formed of a semiconductor element, the former one using the transformer is limited to the case of AC-AC at the same frequency and not applicable to the case of DC at one end, and the latter one using the inverter is limited to the case of DC-DC and AC-AC and also cannot cope with the abrupt change of a load bidirectionally, and that the development of a power converter capable of smoothly bidirectionally coping with power conversion between AC and DC even under the abrupt change of the load has urgently been needed. SOLUTION: Semiconductor switches are arranged between the AC end of a AC-DC power converter and a winding at one end of the transformer and between the DC end of the power converter and a winding at the other end of the transformer. A DC-end voltage is compared with a reference voltage and the variation of the comparison is detected: a PWM wave of a frequency enough higher than an AC frequency is formed based on the variation; and the semiconductor switches are on/off-controlled by using the PWM wave. COPYRIGHT: (C)2003,JPO

8. 发明专利

JP2001268892A POWER SUPPLY UNIT 失效
公开(公告)号：JP2001268892A
公开(公告)日：2001-09-28
申请号：JP2000078642
申请日：2000-03-21
申请人： ORIGIN ELECTRIC , NIPPON TELEGRAPH & TELEPHONE , SHINDENGEN ELECTRIC MFG
发明人： TAKAGI YOSHIRO , HIROSE KEIICHI , YAMAZAKI MIKIO , MIYAZAWA KUNIO
IPC分类号： H02M7/04 , H02M1/00 , H02M3/00
摘要： PROBLEM TO BE SOLVED: To facilitate an additional installation and a maintenance of a power supply unit by drawing or inserting the unit from or into a front surface (surface of a cover side) of a power supply unit in a sealed power supply unit having the cover. SOLUTION: The power supply unit comprises a sealed housing having the cover, one or more power supply units contained in the housing, a connector for connecting to a connector of the unit, and wirings for connecting the units or the like. The power supply unit further comprises a backboard for wiring provided on the opposite side to the cover of the housing.

9. 发明专利

JP2000232732A FEED SYSTEM OSCILLATION AMPLITUDE SUPPRESSING CIRCUIT AND OSCILLATION DETECTOR 失效
公开(公告)号：JP2000232732A
公开(公告)日：2000-08-22
申请号：JP3250699
申请日：1999-02-10
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAZAKI MIKIO , SERATA TAKATSUGU , KUWATA YUTAKA
IPC分类号： H02J1/02
摘要： PROBLEM TO BE SOLVED: To prevent the breakdown of a constant-power load device by, if a feed system oscillates due to negative resistance resulting from inductance due to feeder length and load and the capacitor of an input filter, controlling oscillation voltage within a certain range. SOLUTION: If a feed system oscillates, a charging current starts to flow to a capacitor 4 through a base resistor 5 when the input voltage exceeds the initial voltage Vc of the capacitor 4 during a positive half period of oscillation. Further, when the input voltage exceeds the initial voltage VC plus the voltage Vbe between base and emitter, almost all the charging current in the capacitor 4 is used as the base current Ib of a transistor 6, and the transistor 6 is brought into an active state. That is, the collector current Ic of the transistor 6 flows by an amount equivalent to a value obtained by multiplying the base current Ib by a current amplification factor, and the oscillating current of the feed system is bypassed upstream from a constant-power load device 1, so that electric charges are not accumulated in the input capacitor 7. Therefore, the voltage of the input capacitor 7 is only increased to the sum of the initial voltage Vc and the voltage Vbe between base and emitter.

10. 发明专利

JPH11341174A REMOTE POWER SUPPLY STARTING DEVICE 失效
公开(公告)号：JPH11341174A
公开(公告)日：1999-12-10
申请号：JP14592898
申请日：1998-05-27
申请人： NIPPON TELEGRAPH & TELEPHONE
发明人： YAMAZAKI MIKIO
IPC分类号： G06F1/26 , H02J13/00 , H04M11/00
摘要： PROBLEM TO BE SOLVED: To attain communication by starting a terminal equipment in a complete stop state based on a command from a remote control equipment. SOLUTION: This device is provided with a remote power supply starting terminal control device 15 for transmitting a power for starting to a communication line 17 when a communication request is issued from a control equipment 11 and a terminal power source control device 18 for supplying the power of a terminal equipment 21 by receiving a power for starting through the communication line 17. In this case, the terminal equipment 21 communicates through the terminal power source control device 18, communication line 17, and remote power supply starting terminal controller 15 with the controller 11.

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