Abstract:
PROBLEM TO BE SOLVED: To provide a fuel cell system capable of selecting a fuel cell operation mode more suitably, based on operation conditions of a purge valve and a circulating pump. SOLUTION: The fuel cell system 10 is provided with a supply passage 50, an upper-stream side circulating passage 56, a down-stream side circulating passage 60, an exhausting passage 58 for exhausting exhaust gas to the outside through a purge valve 59 branching from the upper-stream side circulating passage 56, and a controlling part 80. The controlling part 80 includes a circulating pump judging means for judging operation conditions of a circulating pump 62, a purge valve judging means for judging operation conditions of the purge valve 59, and a mode selecting means for selecting one fuel cell operation mode out of a plurality of fuel cell operation modes, based on the operation state of the circulating pump 62 and the purge valve 59. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To quickly raise temperature of a hearing element by suppressing heat transmission to a heat radiating plate when temperature of the heating element is low and radiate heat by accelerating heat transmission to the heat radiating plate when temperature of the heating element is high. SOLUTION: This device is equipped with: the heat radiating plate 110; a support member 120 supporting the heat radiating plate 110 and the heating element 200, while keeping the both separate; and a heat transmission member 130 disposed between the heat radiating plate 110 and the heating element 200, separating from at least one of the heat radiating plate 110 and the heating element 200 when temperature of the heating element 200 is lower than predetermined temperature, and keeping contact with both of the heat radiating plate 110 and the heating element 200 when temperature of the heating element 200 is higher than the predetermined temperature. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress temperature reduction in a fuel cell system by utilizing an air conditioning device while satisfying requirements regarding temperature adjustment in an air-conditioned room.SOLUTION: An ECU80 is a control device to control a fuel cell system equipped with an FC stack 10 and a hot-air heater 50 to heat air for air-conditioning. A control means 82 of the ECU80 decides heater output Ph of the hot-air heater 50 based on the target heat value of the FC stack 10 decided by using an outside temperature Ta obtained from a temperature sensor 70d and an output requirement of the FC stack 10, and by electric power generated by the FC stack 10, controls so that the hot-air heater 50 is operated at the output of the heater output Ph or more. Furthermore, based on heater output requirement value of the hot-air heater 50 set by instructions of a user to the air-conditioning device and the heater output Ph, the control means 82 controls a destination of the air heated by the hot-air heater 50 by controlling a distribution switching means 60.
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel cell system in which superior startability is secured even below the freezing point. SOLUTION: In the fuel cell system 1, a reaction gas is supplied to a fuel cell 20, and electric power is generated by an electrochemical reaction of the reaction gas, in which a stimulus imparting part to impart the stimulus to a liquid existing in a gas passage in the fuel cell 20 and a determining part 5 to determine with or without of a super-cooled water in the gas passage are equipped. In the case existence of the super-cooled water in the gas passage is determined at the starting time of the system, and the super-cooled water is imparted with the stimulus by the stimulus imparting part. The stimulus imparting part consists of refrigerant supply/discharge parts 73, C1, C2, C13 to supply and discharge the refrigerant to the fuel cell 20, and imparts stimulus to the super-cooled water by supplying the refrigerant to the fuel cell 20. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an abnormality detection device and method of a fuel cell system with start-up time of the fuel cell system shortened and capable of detection with high accuracy. SOLUTION: In the fuel cell system provided with a fuel cell 1, a piping 15 supplying reaction gas to the fuel cell 1 with, main stop valves SV1 TO SV4 fitted to the piping 15, and a pressure-regulating valve RG1 fitted to the piping 15 at a downstream side of the main stop valves SV1 to SV4, abnormalities at a high-voltage piping 15a and its upstream as well as downstream side are detected based on a difference of a pressure inside the high-pressure piping 15a at stoppage demand on the system, and a pressure inside the high-pressure piping 15a detected at restart of the fuel cell system. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress the deterioration of a fuel cell due to the occlusion of a gas flow path in a fuel cell system. SOLUTION: In this fuel cell system, whether or not generated water is plugged up in the piping of a cathode offgas is determined based on pressure in the piping. When the piping is plugged up, an upper limit value of the output target value of a fuel cell stack is restricted. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel cell system capable of precisely determining that an exhaust/drainage valve is thawed by a simple and quick means.SOLUTION: The fuel cell system includes a fuel cell for generating power in electrochemical reaction of a fuel gas with an oxidizer gas; an exhaust/drainage valve to be driven to open/close by an electromagnetic actuator to discharge a part of the fuel gas discharged from the fuel cell after the reaction and moisture contained in the fuel gas after the reaction; and a control section, including a current sensor for detecting the current charged to a coil of the electromagnetic actuator and for outputting a command for opening/closing the exhaust/drainage valve. The control section includes a thaw determining means which computes a coil resistance value, based on the opening/closing duty ratio of the exhaust/drainage valve and the electrifying current value obtained by the current sensor, when the computed value is larger than a first threshold which determines that the exhaust/drainage valve is thawed.
Abstract:
PROBLEM TO BE SOLVED: To acquire temperature of a fuel cell with high precision, with no use of a temperature sensor. SOLUTION: A control part 40 of a fuel cell system FC acquires an operation stop internal pressure while operation of a fuel cell 10 is suspended by excluding an internal pressure change due to crossleak in a state where the reactive gas inside the fuel cell 10 is sealed. The control part 40 calculates a current internal temperature of the fuel cell 10 using a temperature of the fuel cell 10 during an operation which is detected with a temperature sensor 311, a calculated internal pressure, and a current internal pressure detected with an anode pressure sensor 301. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To substantially enhance the starting performance of a fuel cell under low temperature environment by efficiently raising the temperature in a gas inlet peripheral region of the fuel cell. SOLUTION: A separator 11 includes an oxidative gas inlet side manifold 13 for introducing oxidative gas from the outside into a first plane 11a adjacently arranged to a power generation body of the fuel cell, an oxidative gas outlet side manifold 15 for exhausting the oxidative gas from the first plane 11a to the outside, a coolant inlet side manifold 17 for supplying coolant from the outside to a second plane 11c arranged on the opposite side of the power generation body, and a coolant outlet side manifold 18 for exhausting the coolant from the second plane 11c to the outside, and also includes a heat transfer suppressing means 19 suppressing heat transfer between a region A IN in the peripheral of the oxidative gas inlet side manifold 13 and a region A OUT in the peripheral of the oxidative gas outlet side manifold 15. COPYRIGHT: (C)2010,JPO&INPIT
Abstract translation:要解决的问题:通过有效地提高燃料电池的进气周边区域的温度,在低温环境下大幅提高燃料电池的起动性能。 解决方案:分离器11包括用于将氧化气体从外部引入到与燃料电池的发电体相邻布置的第一平面11a中的氧化气体入口侧歧管13,用于排出燃料电池的氧化气体出口侧歧管15 从第一平面11a到外部的氧化气体,用于将冷却剂从外部供给到布置在发电体的相对侧上的第二平面11c的冷却剂入口侧歧管17和用于排出冷却剂的冷却剂出口侧歧管18 并且还包括抑制氧化性气体入口侧歧管13的周边区域A IN SB>与区域A OUT SB>在氧化性气体出口侧歧管15的周边。版权所有(C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a technology capable of scavenging a fuel cell thoroughly even if a suppliable oxidizing gas volume of a pump is small. SOLUTION: The fuel cell system is provided with a fuel cell, a pump for supplying oxidizing gas to the fuel cell, a secondary battery for supplying power at least to the pump, a fuel gas tank for supplying fuel gas to the fuel cell, a detecting part for detecting a necessary power volume for supplying an oxidizing gas volume necessary for scavenging in the pump and a suppliable power volume of the secondary battery in case the fuel cell is scavenged when power generation of the fuel cell is over, and a scavenging power generation controlling part for making the fuel cell carry out scavenging power generation if the suppliable power volume is compared with the necessary power volume detected by the detecting part and if the suppliable power volume is smaller than the necessary power volume. COPYRIGHT: (C)2010,JPO&INPIT