US2013252139A1PendingUtilityA1

Method for producing bipolar plates

62
Assignee: ENERGYOR TECHNOLOGIES INCPriority: May 13, 2010Filed: May 21, 2013Published: Sep 26, 2013
Est. expiryMay 13, 2030(~3.8 yrs left)· nominal 20-yr term from priority
Inventors:Thomas Jones
H01M 8/026H01M 8/248B26F 1/384H01M 8/0273Y10T83/0524H01M 8/1013H01M 8/0247H01M 8/1011H01M 8/0213B26F 1/40H01M 8/0267H01M 8/0202H01M 8/0258H01M 8/2483Y02E60/50
62
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Claims

Abstract

Disclosed herein is a method for producing bipolar plates. The method comprises providing an electrically conductive sheet and then cutting through the sheet to create at least one opening for a fluid in the sheet.

Claims

exact text as granted — not AI-modified
1 . A method for producing bipolar plates, the method comprising:
 (a) providing an electrically conductive sheet; and   (b) cutting through the sheet to create therein at least one opening for a fluid.   
     
     
         2 . The method according to  claim 1 , further comprising finishing the cut sheet by pressing it between two rigid, flat plates. 
     
     
         3 . The method according to  claim 2 , in which the rigid, flat plates each include a non-stick coating. 
     
     
         4 . The method according to  claim 1 , further comprising finishing the cut sheet by pressing it between two parallel rollers. 
     
     
         5 . The method according to  claim 4 , in which the parallel rollers each include a non-stick coating. 
     
     
         6 . The method according to  claim 1 , in which the cutting step is carried out using a die having at least one blade. 
     
     
         7 . The method according to  claim 6 , in which the die has two blades. 
     
     
         8 . The method according to  claim 7 , in which the two blades of the die are located side-by-side. 
     
     
         9 . The method according to  claim 6 , in which the die is a rule die or a flexible die. 
     
     
         10 . The method according to  claim 1 , in which the cut plate includes at least one elongate oxidant flow opening. 
     
     
         11 . The method according to  claim 10 , in which the cut plate includes a plurality of elongate parallel oxidant flow openings. 
     
     
         12 . The method according to  claim 11 , in which at least one oxidant inlet manifold opening and at least one oxidant outlet manifold opening located at the ends of the elongate oxidant flow openings and in communication therewith. 
     
     
         13 . The method according to  claim 1 , in which the cut plate includes at least one fuel inlet manifold opening and at least one fuel outlet manifold opening. 
     
     
         14 . The method according to  claim 1 , in which the cut plate includes at least one elongate fuel flow opening. 
     
     
         15 . The method according to clam  14 , in which the cut plate includes a plurality of elongate parallel fuel flow openings. 
     
     
         16 . The method according to  claim 15 , in which the cut plate includes at least one fuel inlet manifold opening and at least one fuel outlet manifold opening which are located away and separate from the elongate parallel fuel flow openings. 
     
     
         17 . The method according to  claim 15 , in which the cut plate includes at least one fuel inlet manifold opening and at least one fuel outlet manifold opening located at the ends of the elongate fuel flow openings and in communication therewith. 
     
     
         18 . The method according to  claim 15 , in which the openings carry a coolant and fuel combination. 
     
     
         19 . The method according to  claim 18 , in which the coolant and fuel combination is an alcohol. 
     
     
         20 . The method according to  claim 19 , in which the alcohol is methanol or ethanol. 
     
     
         21 . The method according to  claim 20 , in which the alcohol is methanol. 
     
     
         22 . The method according to  claim 1 , in which the cut plate is an oxidant flow field plate. 
     
     
         23 . The method according to  claim 1 , in which the cut plate is a fuel flow field plate. 
     
     
         24 . The method according to  claim 1 , in which the cut plate includes a plurality of oxidant inlet manifold openings and a plurality of oxidant outlet manifold openings. 
     
     
         25 . The method according to  claim 1 , in which the cut plate includes at least one fuel inlet manifold opening and at least one fuel outlet manifold opening. 
     
     
         26 . The method according to  claim 1 , in which the cut plate is a separator plate. 
     
     
         27 . The method according to  claim 26 , in which the separator plate is a cooling fin separator plate 
     
     
         28 . The method according to  claim 1 , in which the electrically conductive sheet is flexible graphite.

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