Abstract: A battery cell is configured to have a structure in which an electrode stack is configured to have a structure in which positive electrodes and negative electrodes are stacked in a height direction. Separators are disposed respectively between the positive electrodes and the negative electrodes, and when mounted in a battery case in a sealed state. The electrode stack is configured to have a structure in which a length in a height direction, which is a stacked direction of the electrode stack, on the basis of the ground is greater than that in a width direction perpendicular to the height direction, and the battery case is formed in the shape of a pipe corresponding to an outside of the electrode stack.

Abstract: The present invention relates to an electrode assembly including at least two electrode plates and a separator interposed between the electrode plates, wherein indented portions are formed from lower ends of opposite sides of the electrode tab in an opposite direction to an externally extending direction of the electrode tab in a side of the electrode body in which the electrode tab externally extends, in the electrode plates.

Abstract: The present invention provides a manufacturing device of a battery case including a first mold including a first space part having a shape corresponding to a storage part formed therein; a second mold including a second space part having a shape corresponding to the storage part and a through-hole communicating with the second space part formed therein, and coupled to the first mold with a laminate sheet interposed therebetween; and an air pressure regulator mounted in the through-hole in a state in which the first space part and the second space part are isolated from the outside, and increasing or decreasing an air pressure of the second space part through the through-hole to stretch and modify the laminate sheet into a shape corresponding to the first space part or the second space part.

Abstract: The present invention provides a battery module including: a battery cell laminate in which a plurality of battery cells having a structure in which an electrode assembly is inside a sealed battery case with an electrolyte solution are arranged with the sides being in contact with each other; and a cooling/buffering member, mounted beneath the battery cell laminate to support a load of the battery cell laminate, and formed of a porous structure to emit heat generated from the battery cell laminate during a charge and discharge process down the battery cell laminate.

Abstract: The present invention relates to a secondary battery electrode including: a collector positioned between an external wire and an electrode active material to transfer electrons; and an electrode mixture layer coated on the collector, wherein the electrode mixture layer includes a cross-linked polymer, an electrode active material, and a binder, and the cross-linked polymer is formed by a cross-linked bond between a first polymerization unit and a second polymerization unit to have an interpenetrating polymer network (IPN), and a manufacturing method thereof.

Abstract: The present invention provides a battery cell including: an electrode assembly having a structure in which a positive electrode, a negative electrode, and a separator are laminated, each of the positive electrode and the negative electrode having 2×n (n?2), wherein a positive tab is provided in each of odd-numbered sides, and a negative electrode tab is provided in each of even-numbered sides, and the positive electrodes and the negative electrode tabs are alternately formed along the sides; electrode terminals respectively disposed on a first side and a second side of the electrode assembly, in which outermost electrodes are disposed, or third sides which are side surfaces of the electrode assembly, being perpendicular to the first side and the second side, and a battery case having a structure of surrounding an external surface of the electrode assembly.

Abstract: The present disclosure discloses a cell assembly including: a plurality of cells arranged at predetermined intervals; and a cushion pad disposed between the cells to be in surface contact with the cells and configured to absorb volumetric expansion of the cells, wherein the cushion pad has a thermal conductivity of 1.5 W/mK or higher.

Abstract: An apparatus and method are provided for forming a pouch case with improved forming quality and minimized surface contact between the forming apparatus and the pouch case in the forming process to form a pouch cup. The apparatus includes a mold on which a pouch case with a plate shape can be placed, wherein the mold bulges upwards, a chamber open at bottom to the pouch case and the mold, the chamber having an inner space in which the mold can be received by lift-up of the mold or lift-down of the chamber, wherein the chamber is seated on an edge portion of the pouch case, and the chamber is equipped with a fluid input valve at top and a fluid output valve at bottom, and a fluid supply unit configured to supply a fluid via the fluid input valve to carry out pressure forming of the pouch case.

Abstract: The present invention provides a battery cell including: an electrode assembly having a structure in which a separator is interposed between a cathode and an anode, wherein the separator is formed with a plurality of pores and the pores include a gelation electrolyte solution component.

Abstract: The present invention provides a method of manufacturing a battery cell, including: (i) manufacturing a reference cell composed of an electrolyte solution, n reference electrodes (n?2) and a lithium electrode; (ii) charging the reference cell by applying a microcurrent, and then discharging the reference cell immediately thereafter; (iii) charging the reference cell to 40% to 60% of a capacity discharged in the process (ii), thereby performing formation on the reference electrodes so that the reference electrodes have a plateau potential simultaneously; (iv) manufacturing n battery cells with the reference electrodes subjected to formation, an electrode assembly, the electrolyte solution and a battery case; and (v) measuring a relative potential of the reference electrode subjected to formation and a positive electrode, and a relative potential of the reference electrode and a negative electrode, in each of the battery cells.

Abstract: Disclosed herein are an electrode assembly including a plurality of unit cells arranged in a height direction on the basis of a plane, at least two of the unit cells having different planar sizes, and a space portion defined by the difference in planar size between the arranged unit cells, wherein each of the unit cells includes at least one electrode plate, electrode tabs protruding from the electrode plates of the unit cells are electrically connected to an electrode lead via a tab-lead coupling part, and the tab-lead coupling part is located in the space portion, and a battery cell including the same.

Abstract: Disclosed herein are an electrode configured such that electrode mixture parts, each of which includes an electrode active material, and irreversible parts, each of which includes an irreversible additive, are alternately coated on one surface or both surfaces of a current collector to form an electrode pattern and a secondary battery including the same.

Abstract: Disclosed herein is a battery cell configured to have a structure in which an electrode stack, which is configured to have a structure in which positive electrodes and negative electrodes are stacked in the height direction on the basis of the ground in the state in which separators are disposed respectively between the positive electrodes and the negative electrodes, is mounted in a battery case in a sealed state, the battery case is formed in a pipe shape having a hollow part, and the electrode stack is formed in a shape corresponding to the shape of the battery case.

Abstract: Disclosed is a battery cell, including an electrode assembly including electrode plates respectively having an electrode tab protruding therefrom and separators, which are alternately stacked, the electrode tabs being bent in an upper direction of the electrode assembly, the electrode assembly including an electrode lead coupled with an end of the bent electrode tabs to form a tab-lead coupler; and a battery case configured to accommodate the electrode assembly so that the electrode lead is partially exposed outwards. The tab-lead coupler is located on an extension line of an outermost electrode plate of the electrode assembly, which is located at a side where the electrode tabs are bent, and the tab-lead coupler is opposite to one side of the electrode assembly having the protruded electrode tab to come into contact with one side of the electrode assembly or be spaced apart therefrom.

Abstract: Disclosed is a method of pre-lithiating a negative electrode. More particularly, provided is a method of pre-lithiating a negative electrode, a surface of the negative electrode being lithiated by submerging a roll that is formed by rolling together a negative electrode, and copper (Cu) foil, both sides of which are rolled with metallic lithium (Li), in an electrolyte solution.

Abstract: Disclosed is a positive electrode mix for secondary batteries including an irreversible additive. More particularly, provided is a positive electrode mix for secondary batteries including an irreversible additive that decreases irreversible efficiency of a positive electrode active material and a positive electrode.

Abstract: Disclosed herein is a battery including a cell having an electrode laminate and a liquid electrolyte mounted in an internal space of a battery case, a gas discharging member communicating with the internal space of the battery case for discharging gas generated in the cell out of the cell, and a liquid electrolyte injection member communicating with the internal space of the battery case for injecting a liquid electrolyte into internal space of the battery case.

Abstract: Disclosed are a cross-linked compound particle and a secondary battery including the same. More particularly, a compound particle which includes a monomer and a polymerization initiator, as a core and a film including a material disappeared at predetermined temperature as a shell is provided.

Abstract: Disclosed is a positive electrode for secondary batteries including a positive electrode mix coated on a current collector. More particularly, disclosed are a positive electrode for secondary batteries including a positive electrode mix coated on a current collector and a secondary battery including the same, wherein the current collector includes carbon nanotubes (CNTs) vertically grown from a surface of the current collector, the positive electrode mix contact the current collector in a state that at least a portion of the positive electrode mix is interposed in a space between the carbon nanotubes, and the positive electrode has high conductivity and safety.

Abstract: Disclosed herein is a battery cell configured to have a structure in which an electrode stack, which is configured to have a structure in which positive electrodes and negative electrodes are stacked in a height direction on the basis of a ground in a state in which separators are disposed respectively between the positive electrodes and the negative electrodes, is mounted in a battery case in a sealed state, the electrode stack is configured to have a structure in which a length in a height direction (major axis), which is a stacked direction of the electrode stack, on the basis of the ground is greater than that in a width direction (minor axis) perpendicular to the height direction, and the battery case is formed in the shape of a pipe corresponding to an outside of the electrode stack.