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US 2006/0141322 A1Published application
Fuel cell system
OwnerNobuhisa Ishida, Kusunoki Higashinoinventors
Life of this patent
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Abstract
A fuel cell system including a fuel cell including a cell body having an electrolyte membrane held between a fuel electrode and an air electrode, and a fuel supply chamber neighboring to the fuel electrode of the cell body, and having a fuel liquid supply port (and optionally a fuel liquid collecting port); and a fuel liquid supply portion for supplying a fuel liquid into the fuel supply chamber through the fuel liquid supply port. The fuel liquid supply portion supplies the fuel liquid to the fuel supply chamber while generating positive and negative pressure variations in the fuel supply chamber and/or forward and reverse flows of the liquid in the fuel supply chamber for removing a gas produced on the fuel electrode side of the cell body.
Claims19
A fuel cell system comprising:
- a fuel cell including a cell body having an electrolyte membrane held between a fuel electrode and an oxygen electrode, and a fuel supply chamber neighboring to the fuel electrode of said cell body, and having a fuel liquid supply port;
- and
- a fuel liquid supply portion for supplying a fuel liquid into said fuel supply chamber through the fuel liquid supply port of said fuel supply chamber, wherein
- for removing a gas produced on the fuel electrode side of said cell body, the fuel liquid is supplied into the fuel supply chamber from the fuel liquid supply portion while causing pressure variations in said fuel supply chamber and/or causing forward and reverse flows of the liquid in said fuel supply chamber.
1 more element
A fuel cell system comprising:
- a fuel cell including a cell body having an electrolyte membrane held between a fuel electrode and an oxygen electrode, and a fuel supply chamber neighboring to the fuel electrode of said cell body, and having a fuel liquid supply port and a fuel liquid collecting port;
- a fuel liquid supply portion including a reversely operable feed pump supplying a fuel liquid into said fuel supply chamber through the fuel liquid supply port of said fuel supply chamber;
- a valve connected to said fuel liquid collecting port for controlling a flow rate;
- and
- a control portion for the feed pump of said fuel liquid supply portion and said valve, wherein
- said control portion controls an operation of the feed pump of said fuel liquid supply portion and the flow rate of said valve such that said fuel liquid supply portion cooperates with said valve to supply the fuel liquid to said fuel supply chamber while generating positive and negative pressure variations and forward and reverse flows of the liquid in the fuel supply chamber for removing a gas produced on the fuel electrode side of said cell body.
3 more elements
A fuel cell system comprising:
- a fuel cell including a cell body having an electrolyte membrane held between a fuel electrode and an oxygen electrode, and a fuel supply chamber neighboring to the fuel electrode of said cell body, and having a fuel liquid supply port and a fuel liquid collecting port;
- a fuel liquid supply portion including a feed pump supplying a fuel liquid into said fuel supply chamber through the fuel liquid supply port of said fuel supply chamber;
- a valve connected to said fuel liquid collecting port for controlling a flow rate;
- and
- a control portion for the feed pump of said fuel liquid supply portion and said valve, wherein
- said control portion controls an operation of the feed pump of said fuel liquid supply portion and the flow rate of said valve such that said fuel liquid supply portion cooperates with said valve to supply the fuel liquid to said fuel supply chamber while generating positive pressure variations in the fuel supply chamber for removing a gas produced on the fuel electrode side of said cell body.
3 more elements
A fuel cell system comprising:
- a fuel cell including a cell body having an electrolyte membrane held between a fuel electrode and an oxygen electrode, and a fuel supply chamber neighboring to the fuel electrode of said cell body, and having a fuel liquid supply port;
- a fuel liquid supply portion including a reversely operable feed pump supplying a fuel liquid into said fuel supply chamber through the fuel liquid supply port of said fuel supply chamber;
- and
- a control portion for the feed pump of said fuel liquid supply portion, wherein
- said control portion controls an operation of the feed pump of said fuel liquid supply portion such that said fuel liquid supply portion supplies the fuel liquid to said fuel supply chamber while generating positive and negative pressure variations and forward and reverse flows of the liquid in the fuel supply chamber for removing a gas produced on the fuel electrode side of said cell body.
2 more elements
A fuel cell system comprising:
- a fuel cell including a cell body having an electrolyte membrane held between a fuel electrode and an oxygen electrode, and a fuel supply chamber neighboring to the fuel electrode of said cell body, and having a fuel liquid supply port and a fuel liquid collecting port;
- a fuel liquid supply portion including a feed pump supplying a fuel liquid into said fuel supply chamber through the fuel liquid supply port of said fuel supply chamber;
- a collecting pump connected to said fuel liquid collecting port;
- and
- a control portion for the feed pump of said fuel liquid supply portion and the collecting pump, wherein
- said control portion controls operations of the feed pump of said fuel liquid supply portion and said collecting pump such that said fuel liquid supply portion cooperates with said collecting pump to supply the fuel liquid to said fuel supply chamber while generating positive and negative pressure variations in said fuel supply chamber for removing a gas produced on the fuel electrode side of said cell body.
3 more elements
A fuel cell system comprising:
- a fuel cell including a cell body having an electrolyte membrane held between a fuel electrode and an oxygen electrode, and a fuel supply chamber neighboring to the fuel electrode of said cell body, and having a fuel liquid supply port and a fuel liquid collecting port;
- a fuel liquid supply portion including a feed pump supplying a fuel liquid into said fuel supply chamber through the fuel liquid supply port of said fuel supply chamber;
- a collecting pump connected to said fuel liquid collecting port;
- and
- a control portion for the feed pump of said fuel liquid supply portion and the collecting pump, wherein
- said control portion controls operations of the feed pump of said fuel liquid supply portion and said collecting pump such that said fuel liquid supply portion cooperates with said collecting pump to supply the fuel liquid to said fuel supply chamber while generating positive pressure variations in said fuel supply chamber for removing a gas produced on the fuel electrode side of said cell body.
3 more elements
A fuel cell system comprising:
- a fuel cell including a cell body having an electrolyte membrane held between a fuel electrode and an oxygen electrode, and a fuel supply chamber neighboring to the fuel electrode of said cell body, and having a fuel liquid supply port and a fuel liquid collecting port;
- a fuel liquid supply portion including a feed pump supplying a fuel liquid into said fuel supply chamber through the fuel liquid supply port of said fuel supply chamber;
- a collecting pump connected to said fuel liquid collecting port;
- and
- a control portion for the feed pump of said fuel liquid supply portion and the collecting pump, wherein
- said control portion controls operations of the feed pump of said fuel liquid supply portion and said collecting pump to cause intermittently forward and reverse flows of the liquid in said fuel supply chamber while maintaining a negative pressure in said fuel supply chamber for removing a gas produced on the fuel electrode side of said cell body.
3 more elements
A fuel cell system comprising;
- a fuel cell including a cell body having an electrolyte membrane held between a fuel electrode and an oxygen electrode, and a fuel supply chamber neighboring to the fuel electrode of said cell body, and having a fuel liquid supply port and a fuel liquid collecting port;
- a fuel liquid supply portion including a feed pump supplying a fuel liquid into said fuel supply chamber through the fuel liquid supply port of said fuel supply chamber;
- a collecting pump connected to said fuel liquid collecting port;
- and
- a control portion for the feed pump of said fuel liquid supply portion and the collecting pump, wherein
- said control portion controls operations of the feed pump of said fuel liquid supply portion and said collecting pump to cause intermittently forward and reverse flows of the liquid in said fuel supply chamber while maintaining a positive pressure in said fuel supply chamber for removing a gas produced on the fuel electrode side of said cell body.
3 more elements
Dependencies are inferred from the claim text.