Lg Chem, Ltd

Lg Energy Solution, Ltd.

Samsung Sdi Co., Inc.

Chang Bum Ahn

Hyang Mok Lee

Ji Won Park

Hyuk Joo Kim

Seung Ho Na

Myung Hoon Ko

Byungjin Choi

Young Joo Yang

Dae Geun Ku

Jun Woo Huh

Jun Hwan Jang

Wooyong Lee

Sung-Min Hwang

Hyun-Chul Jung

Oh Young Hyun

Hyung Ku Yun

Ik Soo Chae

Ki Hong Min

Dong Hee Sul

Joon Sang Ko

JeongSam Son

In Tae Chun

Jae Huoung Son

Hee Gyoung Kang

Jin Soo Lee

Jae Hong Kim

Bu Gon Shin

Sin Young Park

Dong Hyeuk Park

Tae Yeon Kim

Chang Min Han

Tae Su Kim

Dae Han Seo

Jin Ho Ban

Tae Won Kang

Ah Reum Jung

Ji Soo Park

Sang Jin Woo

Ki Eun Sung

Su Ho Lee

Kwan Bo Lee

Eunyoung Goh

Kyong Won Kang

Sang Ik Lee

Young Min Yuk

Tae Hwan Chung

Jae Hyoung Son

Dong Jun Kim

Il Hwan Park

Jung Su Park

Hak Soo Lee

Kichul Hong

Yunhee Hwang

Hyuk Su Kim

Jeongsam Son

Doo Hyun Lee

Ohyoung Hyun

Hee Gyoung 102-1103 Cheongsol Lg-Sk Apt Kang

A horn includes a plurality of protrusion formation parts, each of which has a plurality of protrusions that protrude from a welding surface and are arranged in a line in at least one row, the plurality of protrusion formation parts respectively configured to form pattern formation parts on an outermost electrode tab of electrode tabs of a secondary battery, and a protrusion-free part which is disposed between two protrusion formation parts of the plurality of protrusion formation parts and in which protrusions are not provided to expose the welding surface to an outside, the protrusion-free part configured to form a pattern-free part on the outermost electrode tab. The protrusion-free part has a width greater than a width of each of the protrusions.

Horn and welding device

A method for manufacturing a secondary battery capable of preventing the phenomenon of bending of an electrode stack generated in an activation step, and a secondary battery produced thereby are provided. The method of manufacturing a lithium secondary battery includes (a) a step of manufacturing a lithium secondary battery by embedding an electrode stack together with an electrolyte in a battery case, (b) a step of aging the battery at room temperature, (c) a hot press step of applying pressure and heat to the lithium secondary battery, and (d) a step of charging the battery, in which a stack surface of the electrode stack is laminated by the hot press step. In the process of activating the secondary battery in which the electrolyte is injected by performing a hot press step, it is possible laminate the stack surface of the electrode stack before the charging process.

Method for manufacturing lithium secondary battery and lithium secondary battery manufactured thereby

An electrode assembly includes a radical unit in which electrodes and separators are alternately stacked, the radical unit having a structure in which one electrode is stacked at the uppermost end. An auxiliary unit is provided with a separation sheet disposed at the uppermost end side of the radical unit. The separation sheet includes a separation part disposed at the uppermost end side of the radical unit and a side surface protection part connected to each of side surfaces of the separation part and folded to contact a side portion of the radical unit to cover the side portion of the radical unit.

Electrode assembly, secondary battery comprising the same, method for manufacturing secondary battery, and battery pack

The present invention relates to a sealing device for a secondary battery. The sealing device is configured to seal a battery case accommodating an electrode assembly therein to manufacture the secondary battery, the sealing device including a sealing block configured to press a sealing portion of the battery case, a flatness adjusting part configured to adjust a flatness of a pressing surface of the sealing block, and a heater part configured to transfer heat to the sealing block to thermally fuse the sealing portion of the battery case when the sealing portion is pressed by the sealing block.

Sealing device for secondary battery

The secondary battery according to the present invention may comprise the separator pocket part having the accommodation groove in which the first electrode plate is accommodated and a radical unit provided as the second electrode plate disposed on one surface of the separator pocket part to secure the stacking property, safety, and insulation.

Secondary battery and method for manufacturing the same

A charge/discharge device for an activation process of a secondary battery including an accommodation structure having a plurality of accommodation spaces and provided with a wiring duct at one side of each of the accommodation spaces, each of a plurality of charge/discharge boxes installed in each of the plurality of accommodation spaces, wires wired in a space inside the wiring duct, and an exhaust fan installed on an inner wall of the wiring duct, in which the exhaust fan is installed on the inner wall of the wiring duct adjacent to one side of the accommodation space, and the wires are wired to pass an external side of the exhaust fan is provided. A heat insulation panel may be additionally installed together with the exhaust fan in the wiring duct.

Charging/discharging device, having reduced temperature difference, for secondary battery formation process

The present invention relates an electrode notching apparatus. The electrode notching apparatus comprises: a notching unit shaping an electrode into a predetermined pattern; a heating unit drying the electrode processed by the notching unit; and a collecting unit collecting the electrode dried by the heating unit, wherein the heating unit comprises: a heating body having a drying space through which the electrode supplied by the notching unit passes; and heating members directly heating a surface of the electrode passing through the drying space to dry moisture remaining on the electrode.

Notching apparatus and method for secondary battery

An electrode assembly includes a cell stack part having (a) a structure in which one kind of radical unit is repeatedly disposed and has same number of electrodes and separators which are alternately disposed and integrally combined, or (b) a structure in which at least two kinds of radical units are disposed in a predetermined order, and an auxiliary unit disposed on at least one among an uppermost part or a lowermost part of the cell stack part. The one kind of radical unit of (a) has a four-layered structure in which a first electrode, a first separator, a second electrode and a second separator are sequentially stacked or a repeating structure in which the four-layered structure is repeatedly stacked, and each of the at least two kinds of radical units are stacked by ones in the predetermined order to form the four-layered structure or the repeating structure.

Electrode assembly and polymer secondary battery cell including the same

A degassing device includes a piercing unit including a piercing body configured to be disposed on a first surface of the secondary battery to seal one side of the first surface of the secondary battery, and a piercing member configured to pierce the sealed one side of the first surface of the secondary battery to form an opening hole; and a gas discharge unit including a gas discharge body configured to be disposed on a second surface of the secondary battery to seal one side of the second surface of the secondary battery, and a gas discharge member configured to discharge the gas within the secondary battery to the outside through the opening hole, wherein the piercing member is configured to form the opening hole passing from the one side of the first surface to the one side of the second surface of the secondary battery.

Degassing device, and facility and method for manufacturing secondary battery comprising the same

The present invention relates to a secondary battery. The secondary battery comprises: an electrode assembly having a through-hole; and a battery case accommodating the electrode assembly and having a through-type opening into which the through-hole is inserted, wherein the battery case comprises: a lower case comprising an accommodation part accommodating the electrode assembly and a lower inner sealing part having the through-type opening into which the through-hole is inserted; and an upper case comprising a cover part coupled to an upper portion of the lower case to finish the accommodation part and an upper inner sealing part having a coupling hole to which a front end of the lower inner sealing part is coupled.

Battery case, secondary battery, and method for manufacturing same

An electrode assembly according to the present disclosure includes an electrode stack part formed by stacking at least one radical unit having a four-layered structure of a first electrode, a separator, a second electrode and a separator, and an electrode fixing part for wrapping and fixing the electrode stack part. The electrode assembly according to the present disclosure may be fabricated by means of a stacking process other than a folding process, and may accomplish accurate alignment and stable fixing.

Electrode assembly and electrochemical cell including the same

An electrode assembly includes a cell stack part having a structure of steps obtained by stacking at least two groups of radical units having different sizes or having different geometric shapes according to the size or the geometric shapes. The radical unit has a combined structure into one body by alternately disposing same number of electrodes and separators, and each step of the cell stack part has a structure in which one kind of radical units is disposed once or repeatedly, or a structure in which at least two kinds of radical units are disposed. The one kind of radical unit has a four-layered structure of first electrode, first separator, second electrode and second separator sequentially stacked or a repeating structure of the four-layered structure. Each of the at least two kinds of radical units are stacked by ones to form the four-layered structure or the repeating structure.

Growing community of inventors

Daejeon, South Korea

Chang Bum Ahn