Lg Energy Solution, Ltd.

Su Taek Jung

Soon Kwan Kwon

Cha Hun Ku

Sang Ho Bae

Seong Won Choi

Seok Jin Kim

Won Nyeon Kim

Jung Hoon Lee

Sang Woo Lee

Byeong Kyu Lee

Tai Jin Jung

Young Seok Baek

Chang Min Han

Yong Jun Lee

Jae Hwa Choi

Hyun Kyung Shin

Ji Hun Hwang

Hun Bum Jung

Jung Kwan Pyo

Sang Hyun Koo

Jin Yong Lee

Joo Young Chung

Ji Hoon Lee

Tae Jong Kim

Jin Gon Kim

Jung Joo Kim

Hyeok Jeong

Won Pill Hwang

Kyoung Won Kang

Seokhoon Jang

Jeong Yeon Kim

Junghoon Lee

Ju Hyeon Cho

Yujin Jeong

Sangho Bae

Minwook Kim

Taejong Kim

Provided are a manufacturing apparatus and a manufacturing method of an electrode for a secondary battery which forms a large number of holes in the electrode mixture having a level difference in thickness, by irradiating twice or less with a nanosecond laser, and an electrode for a secondary battery manufactured by the same.

Manufacturing apparatus and manufacturing method of electrode for secondary battery using laser, and electrode for secondary battery manufactured by the same

An apparatus for preparing a cell is provided. The apparatus includes an electrode reel from which an electrode sheet is unwound, wherein the electrode sheet is configured to form a plurality of electrodes, a separator reel from which a separator sheet is unwound, wherein the separator sheet is configured to stack with the electrode while covering the electrode by being folded when the electrode is stably placed, a table having an upper surface on which the electrode and the separator sheet are stably placed, and a nozzle configured to apply an adhesive to at least a portion of a region of the separator sheet stably placed on the table.

Cell preparation apparatus and method

An ultrasonic welding device for a secondary battery is provided. The ultrasonic welding device is configured to weld an overlapping surface of an electrode tab and an electrode lead in an electrode assembly. The ultrasonic welding device includes an anvil on which the overlapping surface of the electrode tab and the electrode lead are disposed. A horn is configured to apply ultrasonic waves to the overlapping surface of the electrode tab and the electrode lead while pressing the overlapping surface. The overlapping surface is disposed on the anvil. An electrode tab measuring part is configured to measure a thickness of the electrode tab disposed on the overlapping surface. A pressure adjusting device is configured to adjust a pressure applied to the overlapping surface by the anvil and the horn according to the thickness value of the electrode tab. The thickness value is measured by the electrode tab measuring part.

Ultrasonic welding device and welding method for secondary battery

The present invention relates an apparatus for sealing a secondary battery, which seals a pouch. The apparatus for sealing the secondary battery comprises: a support block configured to support a bottom surface of one-side sealing part of the pouch; a sealing member comprising a sealing roller that moves in a longitudinal direction of the one-side sealing part in a state of pressing a top surface of the one-side sealing part supported on the support block to seal the one-side sealing part supported on the support block; and a straightening member configured to flatten a surface of the one-side sealing part on which the sealing roller passes.

Apparatus and method for sealing secondary battery

The present invention relates to an electrolyte injection device including a base portion on which a preliminary battery cell is disposed on an upper surface thereof, a movable pressing jig attached to the base portion, and an electrolyte injection pipe configured to inject an electrolyte into the preliminary battery cell, wherein the movable pressing jig includes a portion configured to press the preliminary battery cell in a direction perpendicular to an upper surface and a lower surface of an electrode assembly receiving portion of the preliminary battery cell, and thus it is possible to prevent a phenomenon in which a separator is folded or peeled off even when an electrolyte injection rate is high.

Electrolyte injection device and electrolyte injection method using the same

An ultrasonic welding device includes an anvil provided so that an overlapping surface of an electrode tab and an electrode lead, which are provided in an electrode assembly, are configured to be disposed thereon; a horn configured to weld the overlapping surface disposed on the anvil; and an inspection member configured to inspect a horizontal level of an opposing member with respect to the overlapping surface, based on an overlapping surface horizontal value that is a horizontal value of the overlapping surface with respect to a predetermined reference surface and an opposing horizontal value that is a horizontal value of the opposing member, which is one of a welding part of the horn configured to face the overlapping surface and a disposing part of the anvil, on which the overlapping surface is configured to be disposed, with respect to the predetermined reference surface.

Secondary battery and ultrasonic welding device and welding method for secondary battery

An electrode assembly manufacturing apparatus includes an electrode sheet supply unit for supplying an electrode sheet on which electrode mixture coating and non-coating portions are formed, a cutting unit at the rear of the supply unit for forming an electrode tab at the electrode sheet, and a lamination unit at the rear of the supply unit and configured to laminate positive and negative electrodes stacked with a separator between them. A cutting unit die supports the electrode sheet and an ultrasonic cutter spaced from the die forms the tab. A cutting line of a cutting edge of the cutter corresponds to a periphery of a unit electrode in a tab forming direction. The cutting and lamination units are on the same line in a continuous process to reduce a necessary space for electrode assembly manufacture and prevent electrode sheet foil deformation and electrode mixture layer damage in the cut section.

Electrode assembly manufacturing apparatus including ultrasonic cutter and method using the same

The present invention provides an adhesive layer coating unit configured to continuously apply an adhesive layer having a first width in a longitudinal direction of a first separator. The adhesive layer coating unit comprises: a transfer roller configured to support a bottom surface of the first separator and transfer the first separator; a discharge roller configured to transfer the first separator, which has passed through the transfer roller, in conjunction with the transfer roller while supporting a top surface of the first separator, wherein a coating groove having the first width and a closed curve shape is formed in a circumferential surface of the discharge roller; and a coating member configured to inject an adhesive into a space between the discharge roller and the top surface of the first separator which has passed through the transfer roller.

Adhesive layer coating unit, electrode assembly manufacturing apparatus comprising same, and electrode assembly manufacturing method

An apparatus for manufacturing an electrode assembly includes a separator supply unit, a table, a separator guide, and first and second upper adhesive supply units. The separator supply unit is configured for supplying a separator sheet from which a separator is formed. The table is configured for supporting a plurality of electrodes and sections of the separator sheet. The separator guide is configured for guiding the separator sheet to fold in a particular folding direction. The first and the second upper adhesive supply units are configured for applying an adhesive to respective sections of the separator sheet. The table is configured for rotating in a first rotational direction such that a first table side of the table moves closer to the second upper adhesive supply unit and in a second rotational direction such that a second table side of the table moves closer to the first adhesive supply unit.

Electrode assembly and apparatus and method for manufacturing the same

A method for manufacturing an electrode assembly according to the present invention comprises: a step (a) of transferring an electrode, in which a plurality of electrodes and a plurality of separators are alternately stacked, to a first position; a step (b) of forming an adhesive layer on both side portions of the separators, which are provided in the electrode assembly disposed at the first position, in a full width direction; a step of (c) of allowing the pair of pressing blocks provided at a second position to move in a direction corresponding to each other, wherein an interval between the pair of pressing blocks is less than a length of each of the separators in a full width direction and is greater than a length of each of the electrodes in a full width direction; a step (d) of allowing both the side portions of the separator to be bent upward while being in contact with the pressing blocks when the electrode assembly disposed at the first position descends to be inserted between the pair of pressing blocks provided at the second position; and a step (e) of allowing both the bent side portions of the separator to be adhered each other by an adhesive layer while overlapping each other when the pair of pressing blocks moves toward the electrode assembly.

Electrode assembly, and apparatus and method for manufacturing the same

The present invention relates to a method for inspecting a welding quality of an electrode tab-electrode lead welded portion of a pouch-type lithium secondary battery, and the method includes: recognizing welding traces of the welded portion by a vision inspection device; measuring a size of each of the recognized welding traces; and determining whether the welded portion has been weakly welded, excessively welded or normally welded by comparing the measured size with a reference value.

Method for inspecting welding quality of welded portion between electrode tab and lead

Discussed are an apparatus for manufacturing an electrode assembly, an electrode manufactured therethrough, and a secondary battery. The apparatus includes an upper and lower roll to press upper and lower portions of the stack, respectively; an upper support part to support the upper roll; a mover to allow the upper support part to move; a lower support to support both sides of the lower roll; a pressure detector provided on the lower support to measure a pressure applied to the lower roll, thereby detecting a pressure applied to the stack; and a controller to adjust the pressure applied to the stack by reflecting a pressure detection value detected in the pressure detector, the pressure detector comprising a first pressure detector to detect pressure applied to one side of the lower roll; and a second pressure detector to detect pressure applied to the other side of the lower roll.

Apparatus for manufacturing electrode assembly, electrode assembly manufactured therethrough, and secondary battery

A method is provided to inspect weld states of a cylindrical battery. The cylindrical battery may include: a cylindrical jelly roll in which a first current collector, a first separator, a second current collector, and a second separator are sequentially stacked and wound, so as to extend in the vertical direction; a first collector plate which is coupled to the upper end of the jelly roll and to the lower surface of which the first current collector is firstly welded; and a second collector plate which is coupled to the lower end of the jelly roll and to the upper surface of which the second current collector is secondly welded. The method may include a first measurement step, a second measurement step, a first weld determination step, and a second weld determination step.

Method for inspecting weld states of battery

The present invention relates to a pressing apparatus capable of uniformly pressing an object to be pressed using a pressure adjustment portion having a fluid contained therein irrespective of the shape of the object and a pressing method using the same.

Pressing apparatus including fluid and electrode and electrode assembly manufacturing method using the same

The present technology relates to a method of inspecting a welding defect. The method includes: manufacturing an electrode assembly sample by welding an electrode lead on an electrode tab formed on an electrode assembly; measuring a tensile strength, a torsional strength and a peeling strength of a welded portion between the electrode tab and the electrode lead for the electrode assembly sample; deriving correlation between whether there is a welding defect and each of the tensile strength, the torsional strength, and the peeling strength; and deriving a reference value for determining whether there is a welding defect for the tensile strength, the torsional strength, and the peeling strength, respectively.

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Daejeon, South Korea

Su Taek Jung