Abstract: An energy storage device module comprises: a plurality of energy storage devices having a first energy storage device and a second energy storage device; a connection member configured to connect a first external terminal of the first energy storage device and a second external terminal of the second energy storage device adjacent to the first energy storage device; and a circuit board including a hole that passes through the first external terminal of the first energy storage device, a board protrusion supported by a curling processed portion formed in a body case of the first energy storage device, a first conductive metal layer formed in a region adjacent to the hole and in contact with the connection member, and a second conductive metal layer formed in a region of the board protrusion and in contact with the curling processed portion.

Abstract: An energy storage device module comprises: a plurality of energy storage devices having a first energy storage device and a second energy storage device; a connection member configured to connect a first external terminal of the first energy storage device and a second external terminal of the second energy storage device adjacent to the first energy storage device; and a circuit board including a hole that passes through the first external terminal of the first energy storage device, a board protrusion supported by a curling processed portion formed in a body case of the first energy storage device, a first conductive metal layer formed in a region adjacent to the hole and in contact with the connection member, and a second conductive metal layer formed in a region of the board protrusion and in contact with the curling processed portion.

Abstract: An external terminal for an electric energy storage device, which is coupled to an upper end of a cylindrical metal case to cap the metal case and has a hollow formed at a center thereof so that a safety valve is installed therein, wherein the metal case includes an outer part exposed to the outside in an erect state in a normal direction and an inner part positioned below the outer part, and wherein the inner part includes a first surface adjacent to the hollow and a second surface stepped higher than the first surface (112a) toward the outer part (111).

Abstract: An external terminal for an electric energy storage device, which is coupled to an upper end of a cylindrical metal case to cap the metal case and has a hollow formed at a center thereof so that a safety valve is installed therein, wherein the metal case includes an outer part exposed to the outside in an erect state in a normal direction and an inner part positioned below the outer part, and wherein the inner part includes a first surface adjacent to the hollow and a second surface stepped higher than the first surface (112a) toward the outer part (111).

Abstract: An energy storage device includes positive and negative electrodes; positive and negative lead wires connected to the positive and negative electrodes, respectively; a separator composed of unit fibers and positioned between the positive and negative electrodes to electrically insulate the positive and negative electrodes from each other; a housing accommodating the positive and negative electrodes and the separator; an electrolyte received in the housing; and positive and negative terminals connected to the positive and negative lead wires, respectively, wherein an electrolyte permeability index of the separator is larger than an electrolyte permeability index of the electrodes, and the unit fibers of the separator are arranged irregularly so that pores formed in the separator have cross sections of polygonal shapes. Using this energy storage device, the electrolyte of electrodes that gives a direct influence on electric capacity is not depleted.

Abstract: Disclosed are an electric energy storage device having a good cycle characteristic and a temperature characteristic and a method of charging and discharging the electric energy storage device. The electric energy storage device including a capacitor and a secondary battery combined in series is provided. When the capacitor of the electric energy storage device is an electric double layer capacitor, the capacitor is used to the voltage of OV or less to increase an available energy usage.

Abstract: An energy storage device includes positive and negative electrodes; positive and negative lead wires connected to the positive and negative electrodes, respectively; a separator composed of unit fibers and positioned between the positive and negative electrodes to electrically insulate the positive and negative electrodes from each other; a housing accommodating the positive and negative electrodes and the separator; an electrolyte received in the housing; and positive and negative terminals connected to the positive and negative lead wires, respectively, wherein an electrolyte permeability index of the separator is larger than an electrolyte permeability index of the electrodes, and the unit fibers of the separator are arranged irregularly so that pores formed in the separator have cross sections of polygonal shapes. Using this energy storage device, the electrolyte of electrodes that gives a direct influence on electric capacity is not depleted.

Abstract: Disclosed are an electric energy storage device having a good cycle characteristic and a temperature characteristic and a method of charging and discharging the electric energy storage device. The electric energy storage device including a capacitor and a secondary battery combined in series is provided. When the capacitor of the electric energy storage device is an electric double layer capacitor, the capacitor is used to the voltage of OV or less to increase an available energy usage. When this energy storage device is used as a power in a place where a rapid keeping and repairing is difficult such as out in the fields including in the mountain, at the sea, on the road, the cost for keeping and repairing can be largely reduced.

Abstract: An the electric energy storage device includes a cylindrical rolling up electrode body, a cathode lead connecting plate, an anode lead connecting plate, a terminal plate, and a container. The rolling up electrode body includes a cathode and an anode leads formed by cathode and anode collectors. The cathode and anode leads are separately extended from one side of the rolling up electrode body. The terminal plate includes a cathode lead connecting plate, an anode lead connecting plate and an insulation combing member for integrally combining the cathode lead connecting plate with the anode lead connecting plate. The container receives the rolling up electrode body. The electric energy storage device may be advantageously connected to another electric energy storage device in serial or parallel. Additionally, the electric energy storage device has some advantages such as reduced volume, enhanced convenience, improved productivity, etc.

Abstract: An electric energy storage system having a novel structure which exhibits a ling cycle life, rapid charging-discharging characteristics and a high energy density. The electric energy storage system comprises: an anode comprised of a first material that performs interalation-deintercalation of cation as an anode active material; a cathode comprised of a second material that may form an electric doublelayer with anion as a cathode active materials; and a electrolyte including lithium salt, the electrolyte including the cation and anion. Due to a high difference between anode and cathode in capacity to store the electric energy, most electrochemical impact that occurs in the process of intercalation-deintercalation of electric energy is absorbed into cathode and active material used for anode is activated carbon having a very high resistance to electrochemical and structural impact, so that its operation life is elongated and it has rapid charging-discharging characteristics.

Abstract: A metal oxide electrode for a supercapacitor and a manufacturing method thereof are disclosed. Potassium permanganate is absorbed on a conductive material, such as carbon or activated carbon, and mixed with a solution including manganese acetate so as to form amorphous manganese oxide. Amorphous manganese oxide powder is grounded to a powder which is mixed with binder to form an electrode having a predetermined shape. The electrode reduces equivalent serial resistance and enhances high frequency characteristics since the contact area and the adhesion strength between the manganese oxide and the conductive carbon are improved. Also, the electrode has high capacitance suitable for a supercapacitor, which is manufactured therefrom at a greatly reduced cost.

Abstract: Disclosed are a conducting polymer coated electrode of a metal oxide electrochemical pseudocapacitor having an improved performance and a method of manufacturing the same. The electrode includes a current collector and an active material coated on the current collector. The active material includes metal oxide and is coated with a conducting polymer on a surface thereof. Metal oxide electrochemical pseudocapacitor includes a plurality of electrodes described above, an electrolyte and a separator positioned between the electrodes to prevent a contact between the electrodes. The metal oxide pseudocapacitor including the electrode coated with the conducting polymer having a high electric conductivity, has an increased storing amount of electric energy and a decreased ESR to improve a high power performance.

Abstract: A novel electric energy storage system having an increased storage energy. This system includes a plurality of electrodes, an organic electrolyte including a solvent and a solute and a separator inserted between the electrodes for preventing a contact between the electrodes. According to the present invention, an organic electrolyte is used to increase the storage amount of the energy and to improve an electric conductivity. A capacitor having various designs can be manufactured.

Abstract: Disclosed is a novel electric energy storage system having an increased storage energy. This system comprises a plurality of electrodes, an organic electrolyte including a solvent and a solute and a separator inserted between the electrodes for preventing a contact between the electrodes. According to the present invention, an organic electrolyte is used to increase the storage amount of the energy and to improve an electric conductivity. A capacitor having various designs can be manufactured.

Abstract: A metal oxide electrode for a supercapacitor and a manufacturing method thereof are disclosed. Potassium permanganate is absorbed on a conductive material, such as carbon or activated carbon, and mixed with a solution including manganese acetate so as to form amorphous manganese oxide. Amorphous manganese oxide powder is grounded to a powder which is mixed with binder to form an electrode having a predetermined shape. The electrode reduces equivalent serial resistance and enhances high frequency characteristics since the contact area and the adhesion strength between the manganese oxide and the conductive carbon are improved. Also, the electrode has high capacitance suitable for a supercapacitor, which is manufactured therefrom at a greatly reduced cost.

Abstract: A metal oxide electrode for a supercapacitor and a manufacturing method thereof are disclosed. Potassium permanganate is absorbed on a conductive material, such as carbon or activated carbon, and mixed with a solution including manganese acetate so as to form amorphous manganese oxide. Amorphous manganese oxide powder is grounded to a powder which is mixed with binder to form an electrode having a predetermined shape. The electrode reduces equivalent serial resistance and enhances high frequency characteristics since the contact area and the adhesion strength between the manganese oxide and the conductive carbon are improved. Also, the electrode has high capacitance suitable for a supercapacitor, which is manufactured therefrom at a greatly reduced cost.