Lg Energy Solution, Ltd.

Lg Chem, Ltd

Han Young Lee

Dae Soo Kim

Ji Su Lee

Seok Koo Kim

Song Taek Oh

Sun Kyu Kim

Jun Soo Park

Bum Young Jung

Dong Kyu Kim

Ji Hyun Choi

Suk Woo Lee

Su Hyun Yun

Dong Sik Yoon

Kyung Min Lee

The present invention relates to an electrode capable of preventing detachment of an active material during a notching process and a process of using the electrode, and to a method for manufacturing same, wherein the electrode has a structure in which an electrode active material layer is formed on a current collector having an electrode tab formed at one end thereof, and a binder layer is formed between the current collector and the electrode active material layer, wherein the binder layer is formed at both ends of the current collector.

Electrode with binder layer formed therein and method for manufacturing same

The present invention relates to a pouch forming apparatus comprising: a die, in which forming grooves are formed with a partition wall therebetween; and a punch member provided with a punch, which is configured to be inserted into each of the forming grooves to press the pouch film to form a pair of accommodation grooves in the pouch film, wherein the forming groove comprises a vertical space disposed above a forming groove bottom part connected to the partition wall and an inclined space connected to the vertical space and formed by providing an inner wall facing the partition wall, the inner wall defining an inclined surface.

Pouch forming apparatus and method

A battery module having a fire-extinguisher, and more particularly to a battery module having a fire-extinguisher, the battery module including a plurality of battery cells stacked in a vertical direction or a horizontal direction and a fire-extinguisher located adjacent to each of the battery cells, wherein the fire-extinguisher includes a fire-extinguishing pack containing a tire-extinguishing material, a piezoelectric element interposed between the battery cell and the fire-extinguishing pack, and at least one breaking unit interposed between the battery cell and the fire-extinguishing pack.

Battery module having fire-extinguishing unit

A pouch for a secondary battery according to an embodiment of the present invention for solving the above problem includes: a surface protection layer made of a first polymer and formed at the outermost layer; a sealant layer made of a second polymer and formed at the innermost layer; a gas barrier layer made of a metal and stacked between the surface protection layer and the sealant layer; and a heat dissipation layer made of ceramic, stacked between the surface protection layer and the sealant layer, and configured to release heat to the outside of the pouch when a predetermined pressure is applied thereto.

Pouch for secondary battery and pouch type secondary battery

An electrode assembly, in which a positive electrode, a separator, and a negative electrode are repeatedly stacked includes a shrinkage film made of a material having a thermal shrinkage rate greater than that of the separator, the shrinkage film being shrunk in area at a specific temperature or more, wherein the shrinkage film is disposed instead of the separator at one or more positions between the positive electrode and the negative electrode so that, when the shrinkage film is shrunk by an increase of a temperature, the positive electrode and the negative electrode, which are adjacent to each other with the shrinkage film therebetween, partially contact each other to generate microcurrent.

Electrode assembly

An electrode assembly according to an embodiment of the present invention for achieving the above object comprises: a first electrode formed in the form of a single sheet and repetitively in-folded and out-folded at a predetermined interval; a second electrode formed into a plurality of pieces and respectively interposed in spaces formed by folding the first electrode; and a separator formed in the form of a single sheet and interposed between the first electrode and the second electrode so as to be repetitively in-folded and out-folded at a predetermined interval together with the first electrode, wherein the first electrode is a single-sided electrode in which a first electrode active material is applied to only one surface of a first electrode collector, and the second electrode is a double-sided electrode in which a second electrode active material is applied to all both surfaces of a second electrode collector.

Electrode assembly and method for manufacturing the same

A secondary battery according to an embodiment of the present invention for solving the above problems includes: an electrode assembly formed by alternately stacking an electrode and a separator; a battery case accommodating the electrode assembly within a cup part of the battery case; a piezoelectric element disposed outside the cup part, the piezoelectric element being configured to receive a pressure when the battery case expands in volume, thereby supplying power to the piezoelectric element; and a punching part that has a sharp end that extends toward a target location on the battery case, the punching part being configured to punch a hole in the target location of the battery case when the power is applied to the piezoelectric element.

Secondary battery and battery module

The present invention provides an electrode assembly comprising: a radical unit provided with first and second electrodes stacked with a separator therebetween, wherein the first electrode is stacked at the outermost side; and a safety unit disposed on the outermost surface of the radical unit, wherein the safety unit comprises: a first safety plate disposed above the outermost surface of the radical unit; and a first semiconductor material provided between the radical unit and the first safety plate, wherein the first semiconductor material changes from an insulator to a conductor at the first set temperature or more to connect the radical unit to the first safety plate, thereby dissipating heat of the radical unit while conducting the heat to the first safety plate.

Electrode assembly, secondary battery comprising the same, and battery pack

A secondary battery includes an electrode assembly formed by alternately stacking an electrode and a separator; a battery case that accommodates the electrode assembly therein; a plurality of electrode tabs protruding from the electrode assembly; a plurality of electrode leads, each of which has one end connected to one of the plurality of electrode tabs and another end protruding to an outside of the battery case; and a short-circuit induction part which has a wire shape, wherein ends of the short-circuit induction part are respectively disposed on a sealing part of the battery case that seals the plurality of electrode leads in the battery case, and wherein the ends of the short-circuit induction part are configured to respectively extend toward the plurality of electrode leads to contact the plurality of electrode leads when reaching a specific temperature.

The present invention relates to a secondary battery and a method for supplementing an electrolyte of the secondary battery. The secondary battery according to the present invention comprises a battery case comprising an accommodation part accommodating an electrode and an electrolyte therein and a sealing member for additionally injecting the electrolyte, which is disposed on a portion of the battery case to additionally inject the electrolyte into the accommodation part of the battery case and seals an injection portion.

Secondary battery and method for supplementing electrolyte of secondary battery

The present invention relates to a battery system capable of mitigating the performance deterioration of a secondary battery cell and extending a period of use by additionally injecting a second electrolyte at a point in time when the capacity of the secondary battery cell has decreased, and a method for operating a battery system which can achieve the same.

Battery system with improved lifetime property and method for operating battery system

A secondary battery is provided. The secondary battery includes an electrode assembly, a case that accommodates the electrode assembly, and a protection member disposed within the case. The protection member includes a curing promoter, an adhesive, and a protective film that separates the curing promoter and the adhesive.

Growing community of inventors

Daejeon, South Korea

Han Young Lee