A fuel cell power generation system capable of generating power constantly and reliably despite a sudden decrease in load power. The fuel cell power generation system comprises a fuel cell for generating power from a fuel and an oxidizer, a fuel treating unit for producing a fuel to be supplied to the fuel cell (1) from a power generation material, a combustor for burning a residual fuel gas not consumed by the fuel cell to heat the fuel treating unit, and a generated output instructing means for determining the generated output of the fuel cell, wherein, when the generated output instructing means reduces the generated power of the fuel cell according to an expected decrease in load power to be supplied, a generated power is decreased at a speed varying with a change in temperature of the fuel treating unit.

Fuel cell power generation system

According to one embodiment, a fuel cell device comprises an electromotive section which is provided with a cell including an anode and a cathode opposed to each other and configured to generate electricity in consequence of a chemical reaction, a fuel tank configured to store a fuel, a fuel channel in which the fuel flows through the anode, an air channel in which air flows through the cathode, a cooling channel which diverges from the fuel channel and extends through the electromotive section, and a fuel supply section configured to supply the fuel from the fuel tank to the anode through the fuel channel and configured to flow some of the fuel from the cooling channel through the electromotive section to cool the electromotive section.

Fuel Cell Device

In a fuel cell stack that is made by stacking unit cells in alternation with separators, lower edges of collector members that are in contact with oxygen electrodes of the unit cells project downward, providing projecting portions that project below lower edges of frames Water-repellent regions are provided on lower edges of the projecting portions, facilitating shedding of water from the projecting portions

Fuel cell stack

The invention provides a temperature control battery box and a temperature control method thereof. The temperature control battery box comprises a controller, a temperature control system and a temperature sensor, wherein the controller controls the temperature control system to operate in one of a heat dissipation mode, a heating mode and a balance temperature mode according to temperature conditions; the temperature control system comprises N heat-conducting plates, a water pump, a cooling water tank, a shunt pipe, a shunt valve, a return pipe, a frequency converter and an induction heater; a first outlet of the shunt valve is connected with an inlet of the cooling water tank; a second outlet of the shunt valve is connected with an inlet of the water pump; when the temperature control system operates in the heat dissipation mode, liquid is introduced into the cooling water tank through the first outlet of the shunt valve; when the temperature control system operates in the heating mode and the balance temperature mode, liquid flows back to the water pump through the second outlet of the shunt valve. The temperature control battery box can be designed into a totally sealed box according to a conduction heat transfer principle; by adoption of the conduction heat transfer, the heat transfer efficiency is high, and the temperature is rapidly regulated.

Temperature control battery box and temperature control method thereof

A fuel cell type power generation device including: a fuel cell extracting electric power by an electrochemical reaction of a fuel; a first combustor burning an unreacted fuel exhausted from the fuel cell; and a second combustor burning an unburned fuel exhausted from the first combustor.

Fuel cell type power generation device, electronic apparatus and treatment method of fuel

PROBLEM TO BE SOLVED: To provide a power generation device whose overall efficiency is high and which is safe when battery performance is improved by increasing a supply quantity of reformed gas, by further providing a specific apparatus in the power generation device having the prescribed constitution. SOLUTION: The power generation device is provided with a fuel reformer 4 to reform fuel into reformed gas having high hydrogen concentration and a fuel cell main body 1 to generate electric power by electrochemical reaction by introducing the reformed gas and air, and uses the reformed gas discharged from the fuel cell main body 1 as reforming energy of the fuel reformer 4. This power generation device is also provided with a catalytic burner 12 to introduce and burn a part of the reformed gas discharged from the fuel cell main body 1 and at least a part of air discharged from the fuel cell main body 1 and a heat exchanger 13 to receover heat generated by combustion. That is, the reformed gas is reacted with air by the catalytic burner 12 without making a temperature of the fuel reformer 4 excessively high, and heat is effectively used recovering generating heat by the heat exchanger 13.

Fuel cell power generation device

PROBLEM TO BE SOLVED: To provide a fuel cell laminate using a high-concentration hydrogen gas aiming at improving efficiency of the generating apparatus by raising the fuel utilization rate in the fuel cell laminate without fuel gas recycling and enabling composition simplification and cost reduction for the generating apparatus. SOLUTION: The fuel cell laminate 13 is split into a plural number of blocks having a different number of cell to the laminating direction. The fuel gas is sent first to blocks having a larger number of the splits and its exhaust gas is sent to blocks having a smaller number of the splits. A high-concentration hydrogen gas is used as the fuel gas. In splitting the blocks, the ratio of cell numbers, m:n, is determined so that the hydrogen utilization rate for each of a plural number of blocks is the same as the others. For example, in the case of splitting the block into 2 stages to the laminating direction, the ratio of cell numbers for splitting the block into 2 stages is determined by m:n=1:(1-UH2/100), wherein the number of cells of a first lower block 14 having a larger number of cells is m, wherein the number of cells of a second upper block 15 having a smaller number of cells is n and wherein the hydrogen utilizing rate (%) is UH2. COPYRIGHT: (C)2001,JPO

Fuel cell laminate using high-concentration hydrogen gas

PROBLEM TO BE SOLVED: To run a fuel cell power generator in high efficiency by using a heat generated from an electric power conversion equipment converting a direct- current electric power of a fuel cell stack into a using form of the electric power. SOLUTION: The fuel cell direct-current output voltage 20 of the fuel cell stack 1 is converted with the electric power conversion equipment 21A using a water-cooled semiconductor element, and is supplied to a load 25. A heat medium heated while flowing through a cooler 41 for cooling water attached to the electric power conversion equipment 21A, is sent to an air intake section of a reaction air blower 5, and is heat-exchanged with the reaction air supplied to an air electrode 3 of the fuel cell stack. Thus, the heat generated in the electric power conversion equipment 21A is used effectively to heat the reaction air. COPYRIGHT: (C)2002,JPO

Hideyuki Miwa

Papers

Fuel cell power generation device

Fuel cell laminate using high-concentration hydrogen gas

Fuel cell power generator