Matches 1 - 50 out of 54 1 2 >


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8980493 Fuel cell cooling system  
A circulation pipe for a coolant is connected to a fuel cell. A pump and a heat exchanger are connected to the circulation pipe. A bypass pipe is connected in parallel with the pump. An ion...
8980494 Water management for a fuel cell  
A fuel cell is provided that includes a water transport plate separating an air flow field and a water flow field. The driving force for moving water across the water transport plate into the...
8431282 Closed coolant loop with expansion device for a fuel cell system  
A fuel cell system that employs a closed coolant loop. The system includes an expansion device having a flexible membrane, where a cooling fluid side of the membrane is in fluid communication with...
8318369 System and method for reducing radiator sizes for low temperature fuel cell systems  
A fuel cell cooling system includes a fuel cell having a liquid loop that produces water vapor. An antifreeze cooling loop includes an inductor that receives the water vapor and introduces the...
8288048 Fuel cell/battery thermal management system  
A thermal management system is disclosed for a hybrid vehicle having an electrochemical power source (battery/fuel cell) and an internal combustion engine. In cooling mode, the system will flow...
8263279 Apparatus for optimized cooling of a drive unit and a fuel cell in a fuel cell vehicle  
A system for cooling a fuel cell stack and a drive unit in a fuel cell vehicle is disclosed, wherein the system includes a drive unit and a fuel cell stack. An oil cooling loop for the drive unit...
8256740 Connection mechanism for fluid pipings, manufacturing method for the same, and fuel cell system including connection mechanism for fluid pipings  
A connection mechanism for fluid pipings, for connecting a plurality of the fluid pipings to flow a fluid, includes: a first component provided to one side of the plurality of the fluid pipings...
8232016 Fuel cell coolant bubble control  
To mitigate bubble blockage in water passageways (78, 85), in or near reactant gas flow field plates (74, 81) of fuel cells (38), passageways are configured with (a) intersecting polygons, obtuse...
8192883 System and method for reducing radiator sizes for low temperature fuel cell systems  
A fuel cell cooling system (10) includes a fuel cell (12) having a liquid loop (24) that produces water vapor. An antifreeze cooling loop (38) includes an inductor (40) that receives the water...
8187762 Fuel cell cooling device with ion extraction medium  
A fuel cell cooling device has a cooling loop for circulating a coolant fluid. At least during the operation of the fuel cell, an ion extraction medium that is in the liquid state is provided. A...
8119299 Coolant system for fuel processor  
A coolant subsystem for use in a fuel processor and a method for its operation are disclosed. In accordance with a first aspect, the coolant subsystem is separate from the feed to the processor...
8057946 Integrated charge air heat exchanger  
An integrated charge air heat exchanger for use in a vehicle fuel cell system is provided. The integrated charge air heat exchanger includes a plurality of coolant conduits adapted for a coolant...
8048549 Liquid metal heat exchanger for high temperature fuel cells  
A heat exchanger for a fuel cell stack includes a first plate and a second plate. The first and second plates are connected to one another by at least one wall. The first and second plates and the...
8020613 Heat transfer controlling mechanism and fuel cell system having the heat transfer controlling mechanism  
A heat transfer controlling mechanism and a fuel cell system, which allow working fluid to flow in a predetermined direction in a loop-shaped flow path without a back flow, having a simple...
7749632 Flow shifting coolant during freeze start-up to promote stack durability and fast start-up  
An auxiliary coolant system, for a fuel cell stack system, includes a reversible coolant pump, a control valve, and plumbing lines. The pump enables the reversal of the coolant flow direction in...
7740963 Liquid fuel type fuel cell system and its operating method  
A direct methanol type fuel cell system provided with a tank for storing an antifreeze that is injected into at least said unit cell or a cell stack and held in place at the time of stand-by...
7572529 Method and system for starting up fuel cell stack at subzero temperatures, and method of designing fuel cell stack  
A method of starting up at a subzero temperature a solid polymer electrolyte fuel cell stack that is formed by stacking a plurality of layers of separators and membrane electrode assemblies having...
7452617 Fuel cell dielectric coolant and evaporative cooling process using same  
The present invention is directed to a fuel cell dielectric coolant and evaporative cooling process using same. The coolant comprises an emulsion that defines a polar internal phase and a...
7442454 Fuel cell system  
A fuel cell is protected from performance degradation and damage by determining when an ion exchange resin filter needs replacement before the occurrence of an increase in the electric...
7410598 Chemical base for fuel cell engine heat exchange coolant/antifreeze  
A nontoxic fuel cell engine coolant which has an electrical resistivity of greater than 250 kOhm-cm, a boiling point of greater than 90° C., a freezing point of less than −40° C., a thermal...
7303831 Antifreeze cooling subsystem  
Liquid cooled systems having coolant circulation loops must often operate in below freezing conditions. For instance, in various applications certain fuel cell systems must be able to tolerate...
7282290 Freeze tolerant fuel cell power plant with a direct contact heat exchanger  
A power plant (10) includes at least one fuel cell (12), a coolant loop (18) including a freeze tolerant accumulator (22) for storing and separating a water immiscible fluid and water coolant, a...
7264895 Fuel cell thermal management system  
The invention provides fuel cell systems and methods of operation where a fuel cell system is used as a backup power supply in a cold environment where the system must be maintained at a suitable...
7255243 Pure water tank for fuel cell system  
A pure water tank reduces stress to be applied to the tank when pure water in the tank freezes, to thereby prevent the deformation or breakage of the tank without thickening the wall of the tank....
7160468 Cooling system for fuel cell and prevention method for degradation of coolant therefor  
A cooling system for a fuel cell system is provided with a circulation system including a circulation pump for circulating coolant, the coolant essentially consisting of water and glycol, a fuel...
7090940 Freeze tolerant fuel cell power plant with a direct contact heat exchanger  
A freeze tolerant fuel cell power plant (10) includes at least one fuel cell (12), a coolant loop (18) including a freeze tolerant accumulator (22) for storing and separating a water immiscible...
6979509 Freeze tolerant fuel cell power plant with a two-component mixed coolant  
A freeze tolerant fuel cell power plant (10) includes at least one fuel cell (12), a coolant loop (42) having a porous water transport plate (44) secured in a heat and mass exchange relationship...
6911275 High molecular weight direct antifreeze cooled fuel cell  
A high molecular weight direct antifreeze cooled fuel cell 10 includes an electrolyte 52 secured between an anode catalyst 54 and a cathode catalyst 56; a porous anode substrate 58 secured in...
6899969 Fuel cell system and freezing prevention method thereof  
In a fuel cell system, a temperature sensor detects an internal temperature of a fuel cell. A cooling water pump is controlled so that it is stopped when the internal temperature of the fuel cell...
6887610 Joining of bipolar plates in proton exchange membrane fuel cell stacks  
A bipolar plate assembly for a proton exchange membrane fuel cell stack advantageously connects electrically conductive plate surfaces, without the requirement to weld or braze the plate pairs....
6887608 Fuel cell system and related operating method  
A fuel cell system and related operating method are disclosed wherein a water storage section (a water storage tank 33), that stores water to humidify a fuel cell 1, is provided with a heat...
6866955 Cooling system for a fuel cell stack  
A fuel cell cooling system is provided with a coolant pump for pumping fluid through coolant flow field passages in a fuel cell stack. A pressure control mechanism is provided for maintaining a...
6811677 Electrolytic cell for the production of aluminum and a method for maintaining a crust on a sidewall and for recovering electricity  
The present invention relates to an electrolytic cell for the production of aluminum comprising an anode and an electrolytic tank where the electrolytic tank comprises an outer shell made from...
6773840 Configuration enabling rapid fuel cell power from sub-freezing initial condition  
A start system for enabling rapid fuel cell power from sub-freezing initial conditions in a fuel cell power plant which comprises heating an antifreeze coolant source and melting ice in the sump...
6753105 Fuel cell system  
A fuel cell system comprises a reservoir for cryogenic media and a fuel cell unit containing at least one fuel cell connected to receive fuel from the reservoir. At least a first heat exchanger is...
6740440 Inexpensive dielectric coolant for fuel cell stacks  
An inexpensive dielectric coolant for fuel cell stacks. The present invention is directed to a fuel cell, a fuel cell system, and methods for cooling a fuel cell and fuel cell system. The fuel...
6730425 Fuel cell system having cool apparatus  
A cooling apparatus that cools a fuel cell has a first forced circulation cooling system that directly cools the fuel cell, a second forced circulation cooling system that is independent of the...
6682839 Method and apparatus for controlling the temperature within an electrochemical fuel cell  
A method of controlling the temperature within an electrochemical fuel cell stack comprises introducing a reactant fluid stream comprising both a heat transfer liquid and a reactant into a fuel...
6632555 Proton electrolyte membrane fuel cell with anti-freeze coolant and humidifiers  
A fuel cell system comprising a closed coolant path within a fuel cell; a humidifier comprising a humidification fluid flow path and a fuel and air gas supply passage continuous in, through and...
6461753 Fuel cell with a direct antifreeze impermeable cooler plate  
A fuel cell with a direct antifreeze impermeable cooler plate is disclosed for producing electrical energy from reducing fluid and process oxidant reactant streams. The fuel cell includes an...
6432566 Direct antifreeze cooled fuel cell power plant  
A direct antifreeze cooled fuel cell power plant is disclosed. The plant includes at least one fuel cell a thermal management system that directs flow of a cooling fluid for controlling heat...
6428916 Coolant treatment system for a direct antifreeze cooled fuel cell assembly  
A coolant treatment system for a direct antifreeze cooled fuel cell power plant including a degassifier for providing interaction between an oxidant and an antifreeze solution which has circulated...
6416891 Operating system for a direct antifreeze cooled fuel cell power plant  
An operating system for a direct antifreeze cooled fuel cell power plant is disclosed for producing electrical energy from reducing and process oxidant fluid reactant streams. The system includes...
6242118 Method and apparatus for removing contaminants from the coolant supply of a fuel cell power plant  
A method and apparatus for removing contaminants from the coolant supply of a fuel cell power plant, wherein coolant which has been exhausted from the fuel cell power plant is fed to an oxidant...
6068941 Start up of cold fuel cell  
A proton exchange membrane fuel cell has methanol or ethanol fed into the coolant passages during shut down so as to prevent water trapped therein from freezing in sub-freezing environments. Upon...
5524681 Apparatus and method for draining and filling a battery cooling system  
An apparatus and method for filling and draining coolant from a battery cooling system (10). A coolant delivery system (94) is fluidly connected to the battery cooling system (10) for providing...
5487955 Cooled zinc-oxygen battery  
The invention provides a multi-cell, sealed, cooled, zinc-oxygen battery, comprising a container containing a plurality of bi-cells, each cell having a housing provided with two major surfaces and...
5344721 Solid polymer electrolyte fuel cell apparatus  
A fuel cell proper is constructed by superposing a plurality of unit cells having a solid polymer electrolyte membrane held between an anode and a cathode. This fuel cell proper is cooled with a...
5284718 Fuel cell membrane electrode and seal assembly  
A membrane electrode and seal assembly for an electrochemical fuel cell comprises first and second layers of porous electrically conductive sheet material, such as carbon fiber paper. The sheet...
5252410 Lightweight fuel cell membrane electrode assembly with integral reactant flow passages  
An electrochemical fuel cell is provided for converting a fuel reactant stream and an oxidant reactant stream to a reaction product stream and electrical energy. The fuel cell includes a membrane...

Matches 1 - 50 out of 54 1 2 >