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61. 发明专利

JPS6355864A FUEL DETECTOR OF FUEL CELL 失效
公开(公告)号：JPS6355864A
公开(公告)日：1988-03-10
申请号：JP19885886
申请日：1986-08-27
申请人： HITACHI LTD
发明人： DOI RYOTA , TSUKUI TSUTOMU , TAKAHASHI SANKICHI , EBARA KATSUYA , KURODA OSAMU , YASUKAWA SABURO
IPC分类号： H01M8/04
摘要： PURPOSE:To improve detection precision by providing a diaphragm wall at the liquid phase area of a fuel and anolyte supply system so that fuel vapor which permeates through the diaphragm wall is sent by a blower to a gas detector for detection. CONSTITUTION:A diaphragm 14 is provided at the wall of an anolyte reservoir 12 in contact with an anolyte 13. The diaphragm 14 is surrounded by a detection box 16, wherein a blower 15 is installed in lower opening thereof and a gas detector 7 and a thermister 8 used for compensating temperatures detected by the gas detector are installed in upper opening thereof and connected to a detection circuit 6. Fuel vapor which permeates through the diaphragm 14 is sent by the blower 15 to gas detector 7 and detected. Since fuel gas which permeates through the diaphragm 14 is immediately sent to the gas detector 7 by the blower 15, it can be detected with a high precision, coinciding with the fuel concentration in the anolyte 13. Also, because of intervention of the diaphragm 14, no sulfuric acid bleeds and a decline of reliability of the gas detector 7 due to corrosion is avoided.

62. 发明专利

JPS62195855A FUEL CELL 失效
公开(公告)号：JPS62195855A
公开(公告)日：1987-08-28
申请号：JP3785686
申请日：1986-02-22
申请人： HITACHI LTD
发明人： IWAASA SHUZO , SHIMIZU TOSHIO , DOI RYOTA , YASUKAWA SABURO , YAMAGUCHI MOTOO , TSUKUI TSUTOMU
IPC分类号： H01M8/02 , H01M4/88 , H01M8/10
摘要： PURPOSE:To make it possible to obtain a stable performance for a long term by joining an ion exchange membrane on the surface of which high molecular acid is produced by graft polymerization and electrodes in the catalyser layer of which a solution having sulfonic group is impregnated. CONSTITUTION:On the surface of an ion exchange membrane 3 a high molecular acid e.g. polystyrene sulfonic acid 6 is produced by graft polymerization, and in the catalyser layer of electrodes 1, 2 a solution having sulfonic group e.g. Nafion solution 7 is impregnated, and then the said membrane 3 and electrodes 1, 2 are joined together. Thus the ion exchange membrane 3 on the surface of which polystyrene sulfonic acid 6 is produced by graft polymerization and the electrodes 1, 2 in the catalyser layer of which Nafion solution 7 having sulfonic group is impregnated are joined together. The joining of the ion exchange membrane 3 and the electrodes 1, 2 is performed so easily and perfectly that the flowing out of the sulfuric acid used with the ion exchange membrane 3 can be eliminated. Thereby the joining process of the ion exchange membrane and the electrodes can be shortened to obtain a stable performance for a long term.

63. 发明专利

JPS6217953A FUEL CELL 失效
公开(公告)号：JPS6217953A
公开(公告)日：1987-01-26
申请号：JP15590685
申请日：1985-07-17
申请人： HITACHI LTD
发明人： TSUKUI TSUTOMU , SHIMIZU TOSHIO , IWAASA SHUZO , YASUKAWA SABURO
IPC分类号： H01M4/86 , H01M4/88 , H01M8/02 , H01M8/10
摘要： PURPOSE:To cause no deficiency of the electrolyte of a negative electrode even in case of eventual leakage of an electrolytic liquid from the negative electrode to an air supply system while making the electrolytic liquid hard to leak by giving a material having an ion exchange radical equal to that of the electrolyte to a catalytic layer of the negative electrode as well as to the boundary face between the catalytic layer and the electrolytic layer. CONSTITUTION:A negative electrode 3 is formed of a porous electrode basic body 31 and a catalytic layer 32 attached to it. Then, the negative electrode 3 is impregnated with a high-molecular electrolyte having a sulphonic acid radical or the impregnated negative electrode is further fired while giving the electrolyte, which does not spring out from the negative electrode. Polyethylene sulphonic acid, polystylene sulphonic acid, polystylene, divinyl benzene sulphonic acid and further an electrolyte, in which a sulphonic acid radial is given to a fluoro resin base, are used for the high-molecular electrolyte having the sulphonic acid radical. Thereby, a negative electrode made of gelatinized high-molecular acid is arranged to lie between the electrolytic layers for giving the electrolyte and simultaneously having an effect as a holding layer of the electrolytic liquid, thus enabling a cell to maintain high performance and a stable characteristic for a long time.

64. 发明专利

JP2003202358A METHOD AND APPARATUS FOR LOCATING ACCIDENT POSITION 审中-公开
公开(公告)号：JP2003202358A
公开(公告)日：2003-07-18
申请号：JP2002001681
申请日：2002-01-08
申请人： HITACHI LTD
发明人： NAMIKATA KIYONORI , YASUKAWA SABURO , NISHIJIMA KAZUO
IPC分类号： G01R31/08
摘要： PROBLEM TO BE SOLVED: To locate an accident position by considering a state of a power system. SOLUTION: In a process in which a signal transmission command is transmitted from a terminal station 12 to transmitters 16 to 36 in each designated time and in which pulsed signals are input into, and transmitted to, a distribution line 10 from the transmitters 16 to 36 which received the signal transmission command, the terminal station 12 measures data of an effective value of a voltage, a current in the distribution line 10, the arrival time of a phase and a waveform, whenever the pulsed signals input from the respective transmitters are detected, an impedance across the terminal station 12 and each transmitter is calculated, the calculated impedance is compared with a set value, a distance up to the accident position A from the terminal station 12 and the kind of an accident are decided on the basis of their compared result, and a decided result is transmitted to a master station 42. COPYRIGHT: (C)2003,JPO

65. 发明专利

JPH0833240A SECONDARY BATTERY POWER STORAGE SYSTEM 失效
公开(公告)号：JPH0833240A
公开(公告)日：1996-02-02
申请号：JP16771294
申请日：1994-07-20
申请人： HITACHI LTD
发明人： YASUKAWA SABURO , AMANO MASAHIKO , JITSUKATA ATSUSHI , KANAI MINORU , WATANABE MASAHIRO
IPC分类号： H02J7/02 , H01M10/50 , H02J3/32 , H02J7/00 , H02J15/00
摘要： PURPOSE:To realize a preferable discharging without causing temperature runaway of a secondary battery even for a quick power demand at the time of dealing with a system failure by operating a power storage system while varying the set temperature of the secondary battery depending on the charged amount thereof. CONSTITUTION:Power supply/receiving request of an AC power system 1 and a charging/discharging request of a secondary battery from a system state evaluation unit 4 are predicted and the set temperature of a battery stack 3 is varied while taking account of the charged amount of the battery fed from a battery charged amount evaluation unit 5 when power supply/receiving operation is carried out. When power is absorbed (received) from the system upon occurrence of a fault thereon, a charging battery group having low charged amount at a high preset temperature is employed in the charging operation. When power is fed (supplied) to an opposite system, a discharging battery group having high charged amount and a low preset temperature is employed for discharging operation. Consequently, the system can be operated while keeping the battery temperature at a prescribed level or below even in the case of quick power supply to a system fault resulting in a suitable secondary battery power storage system.

66. 发明专利

JPH0819181A SYSTEM AND METHOD FOR CONTROL OF POWER GENERATION 失效
公开(公告)号：JPH0819181A
公开(公告)日：1996-01-19
申请号：JP14898294
申请日：1994-06-30
申请人： HITACHI LTD
发明人： IMAMURA YUZURU , KANAI MINORU , UCHIDA TAKASHI , YASUKAWA SABURO
IPC分类号： H02J3/00 , H02J3/38
摘要： PURPOSE:To provide a power-generation control system by which the operation of a power-generation apparatus can be continued even when the power- generation apparatus is paralleled off from a system due to the accident or the like of the system and to provide a power-generation control method in which a power-generation apparatus is utilized by a method wherein the power- generation apparatus which has been paralleled off once is paralleled in again at the request of the emergent supply of electric power to a system in an accident or the like. CONSTITUTION:A power-generation control system 590A is provided with a power-storage control apparatus 594 which can charging-control an output which has been injected into a system 151 for a power-generation apparatus 540 when the power-generation apparatus 540 is paralleled off due to the accident of the system 151. Consequently, the efficiency of an operation can be enhanced by continuing, the operation of the power-generation apparatus, and a service interruption due to the accident or the like of the system can be reduced by utilizing the power-generation apparatus.

67. 发明专利

JPH076383A OPTICAL DISK AND METHOD AND DEVICE FOR DETECTING OUT-OF-FOCUS 失效
公开(公告)号：JPH076383A
公开(公告)日：1995-01-10
申请号：JP14327093
申请日：1993-06-15
申请人： HITACHI LTD
发明人： TSUBOI NOBUYOSHI , MINEMURA HIROYUKI , SUGITA TATSUYA , SATO YOSHIO , FUSHIMI TETSUYA , YASUKAWA SABURO , TSUNODA YOSHITO
IPC分类号： G11B7/09 , G11B7/24 , G11B11/10 , G11B11/105
摘要： PURPOSE:To make an optical head and an optical disk device small in size and light in weight by providing a reflection surface for detecting focus at a position where the focal distance of an objective lens from a reflection surface for recording and reproducing is different. CONSTITUTION:A sample servo system clock pit 354 and a pit for detecting focus 358 are provided on a disk 300. Light condensed by the objective lens 108 is converged to the size equal to the diameter of the pit 354. The surface of the pit 354 is separated from the surface of the pit 358 by (h), and a condensed beam diameter is a little larger on the surface of the pit 358. When the disk 300 is irradiated with the light condensed by the objective lens 108, an RF signal on the reflection surface where the pit is not provided becomes RF1, reflection from the clock pit becomes RF2 and reflection from the pit 358 for detecting out-of-focus becomes RF3.

68. 发明专利

JPH06187723A THIN OPTICAL INFORMATION PROCESSOR 失效
公开(公告)号：JPH06187723A
公开(公告)日：1994-07-08
申请号：JP33835492
申请日：1992-12-18
申请人： HITACHI LTD
发明人： TSUBOI NOBUYOSHI , MINEMURA HIROYUKI , SUGITA TATSUYA , SATO YOSHIO , FUSHIMI TETSUYA , YASUKAWA SABURO , SHIBANUMA HIDEO
IPC分类号： G11B7/00 , G11B7/004 , G11B19/20 , G11B23/00 , G11B23/03
摘要： PURPOSE:To obtain the information processor with superior portability and high reliability by its thin formation and miniaturization by making a structure capable of suppressing eccentricity of an optical disk less than a prescribed value. CONSTITUTION:A thin-optical disk device consists of an optical disk substrate 140, a cartridge 142, one part 144 of an outer wall of the disk device main body, a hub 149, an optical head 200, an objective lens 219, a spindle motor 244 and its spindle 242. In this device, for suppressing the eccentricity of the optical disk 140 to be

69. 发明专利

JPH06139673A OPTICAL DISK AND INFORMATION PROCESSOR USING THE SAME 失效
公开(公告)号：JPH06139673A
公开(公告)日：1994-05-20
申请号：JP28775492
申请日：1992-10-26
申请人： HITACHI LTD
发明人： TSUBOI NOBUYOSHI , MINEMURA HIROYUKI , SUGITA TATSUYA , SATO YOSHIO , YASUKAWA SABURO , FUSHIMI TETSUYA
IPC分类号： G11B7/00 , G11B7/004 , G11B7/095 , G11B17/028 , G11B23/00
摘要： PURPOSE:To improve portability and to thin and miniaturize a device by providing a ariving pin hole and a hub hole on the hub of a disk, inserting the driving pin of a rotation means into the driving pin hole and a fixed shaft into the hub hole and driving the disk and suppressing eccentricity to a specific value or below. CONSTITUTION:The rectangular driving pin hole 1143 into which the driving pin 143 is inserted and the square hub hole 1145 with an inner diameter into which a spindle motor shaft is inserted easily are provided on the hub 1149 of the optical disk 1140. When the spindle motor is started to be rotated, the pin 143 enters the hole 1143, and is rotated while applying force to the hub 1149, and the hub 1149 is rotated stably in the state of being in contact with the spindle shaft. In such a state, the track of the disk 1140 coincides with the rotational center, and the disk is positioned by 3 points adding 2 points coming into contact with the spindle shaft hole 1145 and the center of a shaft 242, and the eccentricity becomes 100mum or below in high precision. Thus, the portability is improved, and the device is thinned and minaturized, and a recording medium becomes exchangeable.

70. 发明专利

JPH05166219A OPTICAL HEAD AND ASSEMBLY METHOD THEREFOR AND INFORMATION PROCESSOR 失效
公开(公告)号：JPH05166219A
公开(公告)日：1993-07-02
申请号：JP32906991
申请日：1991-12-12
申请人： HITACHI LTD
发明人： MINEMURA HIROYUKI , SUGITA TATSUYA , SATO YOSHIO , TSUBOI NOBUYOSHI , YASUKAWA SABURO , FUSHIMI TETSUYA
IPC分类号： G11B7/095 , G11B7/125 , G11B7/135 , G11B7/22
摘要： PURPOSE:To miniaturize the device by providing an actuator for driving an objective lens part on a base body and providing a light emitting part with a pedestal part provided on the base body and a semiconductor laser chip. CONSTITUTION:The heat generated in the semiconductor laser chip 20 is transmitted through the semiconductor pedestal 24 and metallic pedestal 23 to a housing 15 and is radiated by the housing 15. Then, the housing 15 functions as a heat sink and, therefore, there is no need for separately providing a heat sink and the reduction of the thickness of the optical head is possible. The two-dimensional actuator 100 is constituted to drive only the objective lens 50 and can, therefore, execute tracking control and focus control with a small driving force. Since the semiconductor pedestal 24 is used as the pedestal in contact with the semiconductor laser chip 20, the semiconductor laser is kept free from the stress by a difference in the coefft. of thermal expansion.

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