Lead-acid battery design having versatile form factor

Abstract

An electrochemical storage device is disclosed. The device comprises a first electrochemical cell and a second electrochemical cell disposed in a common casing and each comprising an anode and a cathode. The anode of the first electrochemical cell is disposed opposite the cathode of the second electrochemical cell. The device further comprises a separator disposed between the anode of the first electrochemical cell and the cathode of the second electrochemical cell. The anode of the first electrochemical cell and the cathode of the second electrochemical cell are electrically insulated and in communication through an ionically conductive medium adsorbed in the separator. The device further comprises a common current collector disposed on the anode of the first electrochemical cell and the cathode of the second electrochemical cell. The first and second electrochemical cells are electrically connected and insulated from ionic conduction.

1 - 20 . (canceled) 
     
     
         21 . An electrochemical storage device, comprising:
 a first electrochemical cell and a second electrochemical cell disposed in a common casing and each comprising an anode and a cathode, wherein the anode of the first electrochemical cell is disposed opposite the cathode of the second electrochemical cell;   a separator disposed between the anode of the first electrochemical cell and the cathode of the second electrochemical cell, wherein the anode of the first electrochemical cell and the cathode of the second electrochemical cell are electrically insulated and in communication through an ionically conductive medium adsorbed in the separator; and   a common current collector disposed on the anode of the first electrochemical cell and the cathode of the second electrochemical cell, wherein the first and second electrochemical cells are electrically connected and insulated from ionic conduction and wherein the ionic separation of said first and second electrochemical cells mitigates shunt currents.   
     
     
         22 . The device of  claim 21 , wherein the current collector provides substantially uniform current collection providing substantially uniform current density. 
     
     
         23 . The device of  claim 21 , further comprising a hydrophobic coating disposed on the portion of the common current collector between the anode and the cathode. 
     
     
         24 . The device of  claim 21 , further comprising a physical barrier configured to ionically insulate the first and second electrochemical cells. 
     
     
         25 . The device of  claim 21 , further comprising one positive and one negative terminal connection. 
     
     
         26 . The device of  claim 21 , further comprising an insulation frame for disposing anodes and cathodes of two or more electrochemical cells in substantially the same plane. 
     
     
         27 - 30 . (canceled)