Doping bath for fabricating the energy storage device

Abstract

Disclosed herein is a doping bath for fabricating an energy storage device, including: a doping bath that receives an electrolyte; a lithium foil that is provided in the doping bath; and a power supply means that supplies power to the lithium foil and at least one cell laminate provided to be sunk in the electrolyte in the doping bath, wherein the power supply means performs a charging process to supply power between a cathode and an anode of the cell laminate and a discharging process to supply power between the lithium foil and the cathode of the cell laminate to dope the anode of the cell laminate with lithium.

1 . A doping bath for fabricating an energy storage device, comprising:
 a doping bath that receives an electrolyte;   a lithium foil that is provided in the doping bath; and   a power supply means that supplies power to the lithium foil and at least one cell laminate provided to be sunk in the electrolyte in the doping bath,   wherein the power supply means performs a charging process to supply power between a cathode and an anode of the cell laminate and a discharging process to supply power between the lithium foil and the cathode of the cell laminate to dope the anode of the cell laminate with lithium.   
     
     
         2 . The doping bath for fabricating an energy storage device according to  claim 1 , wherein the doping bath includes a temperature control means that controls the temperature of the electrolyte. 
     
     
         3 . The doping bath for fabricating an energy storage device according to  claim 1 , wherein the discharging process is performed after the charging process is performed, and the charging process and the discharging process are repeatedly performed. 
     
     
         4 . A doping bath for fabricating an energy storage device, comprising:
 a doping bath that receives an electrolyte and has a bottom surface and four side surfaces extended from the bottom surface;   a lithium foil that is positioned on at least one surface of side surfaces in the doping bath;   a cathode connection means that is positioned at one side surface of the doping bath;   an anode connection means that is positioned at the other surface opposite to the one surface of the doping bath; and   a power supply means that supplies power to the cathode connection means, the anode connection means, and the lithium foil.   
     
     
         5 . The doping bath for fabricating an energy storage device according to  claim 4 , further comprising:
 at least one cell laminate that is received in the doping bath for fabricating an energy storage device to be sunk in the electrolyte,   wherein the cell laminate includes a cathode, an anode, and a separator, the separator being interposed between the cathode and the anode, the cathode being connected to the cathode connection means, and the anode being connected to the anode connection means.   
     
     
         6 . The doping bath for fabricating an energy storage device according to  claim 5 , wherein the power supply means performs a charging process to supply power between the cathode connection means and the anode connection means and a discharging process to supply power between the lithium foil and the cathode connection means to dope the anode with lithium. 
     
     
         7 . The doping bath for fabricating an energy storage device according to  claim 6 , wherein the discharging process is performed after the charging process is performed, and the charging process and the discharging process are repeatedly performed. 
     
     
         8 . The doping bath for fabricating an energy storage device according to  claim 5 , wherein the cathode and the anode are physically and electrically connected to the cathode connection means and the anode connection means, respectively, by engaging members. 
     
     
         9 . The doping bath for fabricating an energy storage device according to  claim 8 , wherein the engaging member is a clamp. 
     
     
         10 . The doping bath for fabricating an energy storage device according to  claim 4 , wherein the cathode connection means is fixed to one side surface of the doping bath and includes a cathode body part that is electrically connected to the power supply means and at least one cathode load part that extends from the cathode body part to the other side surface at a predetermined length, and
 the anode connection means is fixed to the other side surface of the doping bath and includes an anode body part that is electrically connected to the power supply means and at least one anode load part that extends from the anode body part to the one surface at a predetermined length.   
     
     
         11 . The doping bath for fabricating an energy storage device according to  claim 10 , wherein the cathode body part is fixed to the outside of one side surface of the doping bath and the cathode load part is provided by penetrating through the one side surface, and
 the anode body part is fixed to the outside of the other side surface of the doping bath and the anode load part is provided by penetrating through the other side surface.   
     
     
         12 . The doping bath for fabricating an energy storage device according to  claim 10 , wherein the cathode body part and the anode body part are made of a conductive material, and include a cathode connection terminal that is connected to at least one of both ends of the cathode body part and an anode connection terminal that is connected to at least one of both ends of the anode body part,
 the power supply means being electrically connected to the cathode load part and the anode load part through the cathode connection terminal and the anode connection terminal.   
     
     
         13 . The doping bath for fabricating an energy storage device according to  claim 4 , further comprising:
 lithium fixing taps that are positioned at edges of the side surfaces of the doping bath.   
     
     
         14 . The doping bath for fabricating an energy storage device according to  claim 13 , wherein the lithium fixing tap is physically engaged with the lithium foil to fix the lithium foil, and is electrically connected to the power supply means to electrically connect the power supply means to the lithium foil. 
     
     
         15 . The doping bath for fabricating an energy storage device according to  claim 14 , wherein a step is formed in a predetermined region of the lithium fixing tap to be spaced from the side surface of the doping bath at a predetermined interval, and
 the lithium foil is inserted and fixed into the separate space formed between the step of the lithium fixing tap and the side surface of the doping bath.   
     
     
         16 . The doping bath for fabricating an energy storage device according to  claim 14 , wherein a tap connection terminal connected to the power supply means is provided on the upper portion of the lithium fixing tap. 
     
     
         17 . The doping bath for fabricating an energy storage device according to  claim 4 , further comprising:
 a temperature control means that controls the temperature of the electrolyte.   
     
     
         18 . The doping bath for fabricating an energy storage device according to  claim 17 , wherein the temperature control means is a heater and the heater is provided on a bottom surface of the doping bath. 
     
     
         19 . The doping bath for fabricating an energy storage device according to  claim 4 , wherein the doping bath includes an electrolyte outlet that discharges the electrolyte from the doping bath. 
     
     
         20 . The doping bath for fabricating an energy storage device according to  claim 19 , wherein the electrolyte outlet is provided at a side surface of the doping bath and is positioned at a position adjacent to a bottom surface of the doping bath. 
     
     
         21 . The doping bath for fabricating an energy storage device according to  claim 20 , wherein the bottom surface of the doping bath is entirely inclined so that the bottom surface side contacting the side at which the electrolyte outlet is provided is positioned at a lower position. 
     
     
         22 . The doping bath for fabricating an energy storage device according to  claim 4 , wherein the lithium foil is positioned at a lower position than the cathode connection means and the anode connection means. 
     
     
         23 . The doping bath for fabricating an energy storage device according to  claim 22 , wherein the lithium foil is sunk in the electrolyte.