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1. 发明专利

JP2004234869A Fuel cell system 有权
公开(公告)号：JP2004234869A
公开(公告)日：2004-08-19
申请号：JP2003018409
申请日：2003-01-28
申请人： Hitachi Home & Life Solutions Inc , Hitachi Ltd , 日立ホーム・アンド・ライフ・ソリューション株式会社 , 株式会社日立製作所
发明人： TAKEDA KENJI , ICHINOSE MASAYA , FUTAMI MOTOO , KOMACHIYA MASAHIRO , KUBO KENJI
IPC分类号： H01M8/00 , H01M8/04
CPC分类号： Y02E60/50
摘要： PROBLEM TO BE SOLVED: To provide a fuel cell system for home use capable of restraining receiving power to a required value and improving a rate of an operating ratio of the system.
SOLUTION: The system, provided with a fuel cell 1, a storage cell 2, a charging and discharging device 5, and a direct current/alternate current conversion device 6, satisfies a relation: A=B-C-D, on condition that an output power capacity of the storage cell 2 is A[W], a contracted receiving power at household is B[W], an output power capacity of the fuel cell is C[W], and a receiving power target value isD[W]. The fuel cell 1 outputs its rated power and the storage cell 2 controls charge and discharge according to deviations from the demand power target.
COPYRIGHT: (C)2004,JPO&NCIPI

2. 发明专利

JP2004265671A Operation control method and device for fuel cell 审中-公开
公开(公告)号：JP2004265671A
公开(公告)日：2004-09-24
申请号：JP2003053459
申请日：2003-02-28
申请人： Hitachi Home & Life Solutions Inc , Hitachi Ltd , 日立ホーム・アンド・ライフ・ソリューション株式会社 , 株式会社日立製作所
发明人： ICHINOSE MASAYA , TAKEDA KENJI , FUTAMI MOTOO , KOMACHIYA MASAHIRO , KUBO KENJI
IPC分类号： H01M8/04 , H02J3/38
CPC分类号： H01M8/04559 , H01M8/0491 , H02J3/387 , H02J2001/004 , H02M2001/007
摘要： PROBLEM TO BE SOLVED: To provide an operation control device of a fuel cell suitable for lowering the current of a fuel cell without being affected by fluctuations of the load in the case the voltage of the fuel cell dropped.
SOLUTION: The cell voltage Ef of a fuel cell 1 is detected, and when it has dropped, a current command obtained by converting the power command value Pfc of the fuel cell 1 into a current is lowered. A current limiter 8 makes the current command value as a limit value, and lowers the limit value according to the drop of the Ef. As a specific limiting method of the current command value, the current command value is restricted so that the cell current Ifc starts to go down at a voltage drop alarm level (first threshold), and the cell current reaches zero at a voltage drop protection level (second threshold).
COPYRIGHT: (C)2004,JPO&NCIPI

3. 发明专利

JP2006294573A Fuel cell cogeneration system 审中-公开
标题翻译：燃料电池加热系统
公开(公告)号：JP2006294573A
公开(公告)日：2006-10-26
申请号：JP2005117673
申请日：2005-04-15
申请人： Hitachi Home & Life Solutions Inc , 日立ホーム・アンド・ライフ・ソリューション株式会社
发明人： ENOKITSU YUTAKA , KUBO KENJI , SAKAMOTO KOICHI
IPC分类号： H01M8/04 , H01M8/00
CPC分类号： Y02E60/50
摘要： PROBLEM TO BE SOLVED: To continue power generating operation by a simple system structure and control without making heat radiate by an exclusive unit such as a radiator when a hot water storage tank becomes full by exhaust heat recovery, in a fuel cell cogeneration system.
SOLUTION: This fuel cell cogenerating system is equipped with a fuel cell stack for generating power by hydrogen and oxygen in the air, an exhaust heat recovery means to exchange heat by circulating exhaust heat recovery water for recovering heat caused by power generation, and a hot water storage tank of a layered hot water storage type for storing recovered heat as hot water by the exhaust heat recovery means, and when the hot water storage tank becomes full of high temperature water and the temperature of the exhaust heat recovery water becomes high, the exhaust heat recovery water is circulated by a circulation pump to continue the power generating operation in the fuel cell stack.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了通过简单的系统结构和控制继续发电操作，而当通过废热回收在热水储存罐变满时，通过散热器等专用单元进行热辐射，在燃料电池热电联供系统。解决方案：该燃料电池热电联产系统配备有用于通过空气中的氢气和氧气发电的燃料电池堆;排气热回收装置，其通过循环废热回收水来回收热量，用于回收由发电引起的热量，以及用于通过排气热回收装置将热回收的热量作为热水存储的分层蓄热型热水储存箱，当热水储存罐充满高温水并且排热回收水的温度变为通过循环泵循环排气热回收水，以继续燃料电池堆中的发电操作。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2004039506A Fuel cell system 审中-公开
公开(公告)号：JP2004039506A
公开(公告)日：2004-02-05
申请号：JP2002196648
申请日：2002-07-05
申请人： Hitachi Home & Life Solutions Inc , 日立ホーム・アンド・ライフ・ソリューション株式会社
发明人： KUBO KENJI , HAGIO TOMONORI
IPC分类号： H01M8/00 , H01M8/04
CPC分类号： Y02E60/50
摘要： PROBLEM TO BE SOLVED: To provide a grid-connected power system suitable for a system composed by combining power peak shift by storage into a storage battery and storage of nighttime power with peak power feed to a load having a value rapidly changing while preventing power stored in a power storage system from being reversely fed to the system, in a system with a fuel cell combined with power storage.
SOLUTION: This fuel cell system is equipped with: the fuel cell; the storage battery; a first power converter connected between the fuel cell and a power supply system for converting D.C. into A.C.; and a second power converter connected between the fuel cell and the storage battery for discharging power of the storage battery and for charging the storage battery from a power line between the fuel cell and the storage battery. The fuel cell system is provided with functions for feeding power to the load from the power supply system when required power for the load connected to the power system exceeds the generated power of the fuel cell; for feeding power to the load from the storage battery so as to prevent the power from the power supply system from exceeding a predetermined value; and for charging the storage battery with the power of the fuel cell when the consumption power of the load is smaller than the generation amount of the fuel cell.
COPYRIGHT: (C)2004,JPO

5. 发明专利

JP2004192899A Operation control device of fuel cell system 有权
标题翻译：燃料电池系统的操作控制装置
公开(公告)号：JP2004192899A
公开(公告)日：2004-07-08
申请号：JP2002357920
申请日：2002-12-10
申请人： Hitachi Home & Life Solutions Inc , 日立ホーム・アンド・ライフ・ソリューション株式会社
发明人： ICHINOSE MASAYA , TAKEDA KENJI , FUTAMI MOTOO , KOMACHIYA MASAHIRO , KUBO KENJI
IPC分类号： H01M8/00 , H01M8/04 , H01M16/00
CPC分类号： H01M16/006 , H01M8/04559 , H01M8/04567 , H01M8/04589 , H01M8/04597 , H01M8/04604 , H01M8/04753 , H01M8/0491 , H01M8/04917 , H01M8/0494 , H01M8/04947 , H02J3/387 , H02J7/34 , H02J2001/004 , Y10T307/511
摘要： PROBLEM TO BE SOLVED: To solve a problem where, in a conventional technique, incoming power cannot be controlled because the incoming power is not detected, and the fuel consumption of a fuel cell frequently varies when its load rapidly changes because load power is used as it is, so that efficiency of the fuel cell may be degraded.
SOLUTION: Peak-cut operation is executed in a secondary battery Bat in order to control the incoming power. The load power is calculated from an incoming power detection value and command values of the secondary battery Bat inside control and a power generation facility, and used for command value creation for the fuel cell FC1 by putting a filter in the load power.
COPYRIGHT: (C)2004,JPO&NCIPI
摘要翻译：解决的问题为了解决传统技术中由于没有检测到输入功率而不能控制输入功率的问题，并且当负载快速变化时燃料电池的燃料消耗频繁变化，因为负载功率被直接使用，因此燃料电池的效率可能降低。
解决方案：在二次电池Bat中执行峰值切割操作，以控制输入功率。根据输入功率检测值和二次电池Bat内部控制和发电设备的指令值计算负载功率，并通过将滤波器置于负载功率中来用于燃料电池FC1的指令值创建。版权所有（C）2004，JPO＆NCIPI

6. 发明专利

JP2003309927A Storage system and operation method therefor 审中-公开
标题翻译：存储系统及其操作方法
公开(公告)号：JP2003309927A
公开(公告)日：2003-10-31
申请号：JP2002111455
申请日：2002-04-15
申请人： Hitachi Home & Life Solutions Inc , 日立ホーム・アンド・ライフ・ソリューション株式会社
发明人： KUBO KENJI
IPC分类号： H02J15/00 , H02J3/38 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To control a peak cut which suppresses the peak value of power demand to a prescribed value or below, while fully utilizing a midnight power. SOLUTION: In addition to an upper limit value of a grid power for discriminating whether to discharge to a peak load or not, a lower limit value of the grid power is so provided that no discharge power flows in reverse direction in the power source grid even if discharged to a load. If the grid power exceeds the upper limit value of it due to a peak of a load power, the upper limit value of the grid power is so controlled as not to be exceeded by discharging an electric power stored in advance. If the power stored at midnight is discharged in the daytime, the charged power is so limited that no grid power drops beyond the lower limit value when it is discharged. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：在充分利用午夜电力的同时，控制将电力需求的峰值抑制在规定值以下的峰值切断。
解决方案：除了用于鉴别是否放电到峰值负载的电网功率的上限值之外，电网功率的下限值被设置为使得放电功率在功率方向上不反向流动源电网即使放电到负载。如果电网功率由于负载功率的峰值而超过其上限值，则通过对预先存储的电力进行放电来控制电网功率的上限值不被超过。如果在白天储存的电量在白天放电，则充电功率受到限制，当放电时电网功率不会超过下限值。版权所有（C）2004，JPO

7. 发明专利

JP2005137070A System linkage inverter and power source system 审中-公开
标题翻译：系统连接逆变器和电源系统
公开(公告)号：JP2005137070A
公开(公告)日：2005-05-26
申请号：JP2003368261
申请日：2003-10-29
申请人： Hitachi Home & Life Solutions Inc , 日立ホーム・アンド・ライフ・ソリューション株式会社
发明人： KUBO KENJI
IPC分类号： H02J3/26 , H02M7/48
CPC分类号： Y02E40/50
摘要： PROBLEM TO BE SOLVED: To provide a system linkage inverter which can alleviate the degree of an unbalance even when a load connected to the system power source of single phase 3-lines is unbalanced. SOLUTION: In the system linkage inverter of the single phase 3-lines, half bridge inverters linked to a phase side and b phase side are respectively provided, and the amplitudes of output current commands to the half bridge inverters are controlled in proportion to the amplitudes of the loads of the a phase and the b phase. That is, when the amplitude of the load of the a phase or the b phase is large, the amplitude of the output of each phase is increased in proportion to it, while when the load of the a phase or the b phase is small, the output of each phase is reduced. On the other hand, the function of limiting such decided current output is provided, and the system power is limited by a means for controlling both the powers. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：即使当连接到单相3线的系统电源的负载不平衡时，也可以提供能够减轻不平衡度的系统联动逆变器。
解决方案：在单相3线制的系统联动逆变器中，分别设置了连接到相侧和b相侧的半桥逆变器，并且对半桥逆变器的输出电流的幅度按比例进行控制到a相和b相的负载的振幅。也就是说，当a相或b相的负载的幅度大时，各相的输出的振幅成比例地增加，而当a相或b相的负载小时，每相的输出减少。另一方面，提供限制这种决定的电流输出的功能，并且系统功率受到用于控制两个功率的装置的限制。版权所有（C）2005，JPO＆NCIPI

8. 发明专利

JP2005012892A Power load coordination control system 审中-公开
标题翻译：电力负载协调控制系统
公开(公告)号：JP2005012892A
公开(公告)日：2005-01-13
申请号：JP2003173067
申请日：2003-06-18
申请人： Hitachi Home & Life Solutions Inc , 日立ホーム・アンド・ライフ・ソリューション株式会社
发明人： SUGIYAMA KAZUICHI , MIYAMOTO YOSHIMI , KUBO KENJI
IPC分类号： H02B1/40 , H02J3/00
摘要： PROBLEM TO BE SOLVED: To prevent a master breaker from tripping while supply of power to a load is continued. SOLUTION: The current supplied to load equipments 4a and 4b from a master breaker 1 is measured with master breaker current detectors 2a and 2b. Just before the measurement value exceeds the tolerable current value of the master breaker 1, a microcomputer 9 outputs a power suppression command to the load controllers 4a and 4b, and the load equipments 4a and 4b are so controlled as to suppressed power or current. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了防止主断路器在继续向负载供电时发生跳闸。解决方案：使用主断路器电流检测器2a和2b测量从主断路器1提供给负载设备4a和4b的电流。在测量值超过主断路器1的可容忍电流值之前，微型计算机9向负载控制器4a和4b输出功率抑制命令，并且负载设备4a和4b被控制为抑制功率或电流。版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2004194485A Energy system 审中-公开
公开(公告)号：JP2004194485A
公开(公告)日：2004-07-08
申请号：JP2002362746
申请日：2002-12-13
申请人： Hitachi Home & Life Solutions Inc , 日立ホーム・アンド・ライフ・ソリューション株式会社
发明人： MIYAMOTO YOSHIMI , KENMORI YOSHIHIKO , KUBO KENJI
IPC分类号： F24H1/00 , G05F1/67 , H01L31/042 , H01M8/00 , H02J3/38
CPC分类号： Y02B10/14 , Y02E10/50
摘要： PROBLEM TO BE SOLVED: To provide an energy system that reduces a reverse tidal current that flows into a commercial power supply side and utilizes generated energy highly efficiently. SOLUTION: This energy system comprises a generating device 1 that is connected in such a way as to be capable of outputting by being systematically interconnected with a commercial power supply 5, a heat-pump storage water heater 8, and an electric load 14. An output power monitoring means 6 is provided that is installed between the generating device and the commercial power supply and monitors the output power of the generating device. A system power monitoring means 16 is provided that is installed between a system, to which the heat pump storage water heater and the electric load are connected, and the commercial power supply, and monitors the power of the system. An output power monitored value and a system power monitored one are compared. When a power difference between the output power monitored value and the system power monitored one reaches a preset value, the water heater 8 is operated on input power almost corresponding to the power difference. COPYRIGHT: (C)2004,JPO&NCIPI

10. 发明专利

JP2005085642A Stationary fuel cell power generation system 审中-公开
标题翻译：国际燃料电池发电系统
公开(公告)号：JP2005085642A
公开(公告)日：2005-03-31
申请号：JP2003317649
申请日：2003-09-10
申请人： Hitachi Home & Life Solutions Inc , 日立ホーム・アンド・ライフ・ソリューション株式会社
发明人： MIYAMOTO YOSHIMI , KUBO KENJI , ENOKITSU YUTAKA , IWATA HIROSHI
IPC分类号： H01M8/04
CPC分类号： Y02E60/50
摘要： PROBLEM TO BE SOLVED: To provide a stationary fuel cell power generation system where the security of the system can be maintained in the case of combustible gas leakage even if it is not continuously ventilated, and heat recovery efficiency is improved.
SOLUTION: In the fuel cell power generation system, a main body housing houses an electric control part where an electric control means and a power conversion means are housed in one electric article housing or an insulated field, a reforming means, a power generation means, and a heat recovery means. The electric control part is provided with an intake vent of the electric control part, communicating with the outside air, and provided with an exhaust vent of the electric control part, communicating with the inside of the main body housing. An air intake port for the reforming means or an air intake port for the power generation means are arranged in the front surface or the upper surface or the vicinity of the exhaust vent of the electric control part.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种固定的燃料电池发电系统，其中即使不连续通风也可以在可燃气体泄漏的情况下保持系统的安全性，并且提高热回收效率。解决方案：在燃料电池发电系统中，主体壳体容纳电气控制部件，其中电气控制装置和电力转换装置容纳在一个电动物品外壳或绝缘场中，重整装置，电源发电装置和热回收装置。电气控制部设置有与外部空气连通的电气控制部的进气口，并且设置有与主体壳体的内部连通的电气控制部的排气口。用于重整装置的进气口或用于发电装置的进气口设置在电气控制部分的排气通道的前表面或上表面或附近。版权所有（C）2005，JPO＆NCIPI

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