Pre-doping system of electrode and pre-doping method of electrode using the same

Abstract

The present invention provides a pre-doping system of an electrode and a system using the same. The pre-doping system includes: a doping means for performing a doping process where lithium ions are doped into an electrode; a measuring means for performing a measuring process where an open-circuit potential of the electrode is measured; a switch unit for selectively performing any one of the doping process and the measuring process; a controller for controlling the doping means, the measuring means, and the switch unit and acquiring the open-circuit potential of the electrode measured by the measuring means.

1 . A pre-doping system of an electrode comprising:
 a doping means for performing a doping process where lithium ions are doped into an electrode;   a measuring means for performing a measuring process where an open-circuit potential of the electrode is measured;   a switch unit for selectively performing any one of the doping process and the measuring process; and   a controller for controlling the doping means, the measuring means, and the switch unit and acquiring the open-circuit potential of the electrode measured by the measuring means.   
     
     
         2 . The pre-doping system of an electrode according to  claim 1 , wherein the doping means comprises:
 a doping bath for receiving electrolytic solution in which the electrode is immersed; and   a metal which supplies the lithium ions and is immersed together with the electrode into the electrolytic solution.   
     
     
         3 . The pre-doping system of an electrode according to  claim 2 , further comprising a separator provided on one surface of the metal facing the electrode. 
     
     
         4 . The pre-doping system of an electrode according to  claim 1 , wherein the switch unit comprises:
 one terminal connected to a common contact electrically connected to a supply source of the lithium ions; and   the other terminal selectively connected to any one of a first contact and a second contact, the first contact being electrically connected to the electrode and the second contact being electrically connected to the electrode through the measuring means.   
     
     
         5 . The pre-doping system of an electrode according to  claim 1 , wherein the electrode includes a current collector and an active material layer which is disposed at least one surface of the current collector and reversibly dopes or un-dopes the lithium ions. 
     
     
         6 . The pre-doping system of an electrode according to  claim 1 , further comprising a temperature controller for controlling a temperature of the doping means. 
     
     
         7 . The pre-doping system of an electrode according to  claim 6 , further comprising a heating means for heating the doping means by the temperature controller. 
     
     
         8 . The pre-doping system of an electrode according to  claim 1 , further comprising a moving means for inputting and outputting the electrode and the supply source of the lithium ions into and out of the doping means. 
     
     
         9 . The pre-doping system of an electrode according to  claim 8 , wherein the moving means comprises:
 a carrier for seating and moving the electrode and the supply source of the lithium ions;   a sliding rail for guiding movement of the carrier; and   a driving unit for moving the carrier on the slide rail.   
     
     
         10 . The pre-doping system of an electrode according to  claim 1 , wherein the supply source of the lithium ions include a metal containing the lithium ions, the metal being disposed to face the electrode. 
     
     
         11 . A pre-doping system of an electrode comprising:
 a doping bath for receiving electrolytic solution;   a carrier for inputting and outputting an electrode and a metal into and from the electrolytic solution received in the doping bath;   a sliding rail for guiding the movement of the carrier;   a driving unit for moving the carrier on the slide rail;   a measuring means for measuring an open-circuit potential of the electrode; and   a switch unit for selectively connecting the electrode, the metal, and the measuring means.   
     
     
         12 . The pre-doping system of an electrode according to  claim 11 , wherein the switch unit comprises:
 one terminal connected to a common contact electrically connected to the metal; and   the other terminal selectively connected to any one of a first contact and a second contact, the first contact being electrically connected to the electrode and the second contact being electrically connected to the electrode through the measuring means.   
     
     
         13 . The pre-doping system of an electrode according to  claim 11 , wherein the driving unit comprises:
 a driving motor for generating a driving force;   a timing belt rotated by the driving force; and   a lead screw for moving the carrier by the rotation of the timing belt.   
     
     
         14 . The pre-doping system of an electrode according to  claim 11 , further comprising a heating means for adjusting a temperature of the electrolytic solution, the heating means being disposed on a lower portion of the doping bath. 
     
     
         15 . The pre-doping system of an electrode according to  claim 11 , further comprising a display device for outputting an open-circuit potential of the electrode in real time. 
     
     
         16 . The pre-doping system of an electrode according to  claim 15 , wherein the display device further comprises an input device for inputting operation signals used to operate the driving unit, the measuring means, and the switch unit. 
     
     
         17 . The pre-doping system of an electrode according to  claim 16 , wherein the input device comprise a touch panel. 
     
     
         18 . The pre-doping system of an electrode according to  claim 11 , further comprising a separator formed on one surface of the metal facing the electrode. 
     
     
         19 . The pre-doping system of an electrode according to  claim 11 , wherein the electrode includes terminals exposed from the electrolytic solution. 
     
     
         20 . The pre-doping system of an electrode according to  claim 11 , wherein the electrode includes a current collector, and an active material layer which is disposed at least one surface of the current collector and reversibly dopes or un-dopes the lithium ions. 
     
     
         21 . A method for pre-doping an electrode comprising:
 immersing a metal and an electrode into electrolytic solution;   doping lithium ions into the electrode from the metal;   measuring an open-circuit potential of the electrode; and   repeatedly performing the doping and measuring steps until the open-circuit potential of the electrode reaches a preset value.   
     
     
         22 . The method for pre-doping an electrode according to  claim 21 , wherein the step of measuring the open-circuit potential is performed after the doping process of the electrode is stopped. 
     
     
         23 . The method for pre-doping an electrode according to  claim 21 , further comprising a step of adjusting a temperature of the electrolytic solution, before the doping process of the electrode.