Lg Chem, Ltd

Lg Energy Solution, Ltd.

Jeong Min Ha

No Ma Kim

Hyun Beom Kim

In Ho Hwang

Sung Soo Yoon

Se Young Oh

Geun Hee Kim

Hyung Ho Kwon

Gi Man Kim

Sin Woong Kim

Suk Ky Chang

Min Ki Lee

In Cheon Han

Dae Hong Kim

Seung Joon Park

Jong Hun Kim

Kee Young Kim

Soo Young Kim

No-Ma Kim

In Kyu Park

Woo Ha Kim

Min Kyu Min

Dae Wook Kim

Sung Yun Kwak

Sang Hun Kim

Chung Hee Lee

Kyu Hyun Choi

Ji Soo Park

Dong Yeon Kim

Noma Kim

Jun Kyu Park

Hyun Chul Ha

Sung Su Kim

Sang Jo Bae

Jeong Hwan Kang

Go Eun Lee

Hye Dam Jo

Jeong Taik Lee

Jung Su Oh

Byoung Jin Shin

Min Hae Kim

Keun Hee Kim

No Ma 1009-104 Hanwa Ggumegreen Kim

Suk Ky 7-401 Science Vill Chang

A pouch-type secondary battery includes an electrode assembly, in which a plurality of positive electrodes and a plurality of negative electrodes are alternately stacked with separators therebetween, and a pouch which is formed by sealing a pair of cases integrally connected to each other by a folding portion and includes an accommodation portion that accommodates the electrode assembly. A plurality of outer walls forming a perimeter of the accommodation portion may include a folding portion-side outer wall, which includes the folding portion, and a sealing portion-side outer wall which is connected to a sealing portion in which the pair of cases are fused to each other. An average distance between ends of the plurality of negative electrodes and the folding portion-side outer wall may be about 0.6 mm or less.

Pouch-type secondary battery and battery module having the same

Disclosed are a secondary battery and a secondary battery case. According to one aspect of the present invention, provided is a case for a secondary battery including: a first recess part having a recessed shape; a second recess part opposite the first recess part and having a recessed shape; a circumferential part configured to surround a circumference of each of the first recess part and the second recess part when the case is unfolded; and a connection part provided between the first recess part and the second recess part to connect the first recess part to the second recess part, wherein, when the case is unfolded, the connection part includes: a first connection surface inclined in a first direction from one end of the first recess part; and a second connection surface inclined in the first direction from one end of the second recess part.

Secondary battery and secondary battery case

A pouch-type battery case according to an embodiment of the present invention can include a cup part configured to accommodate an electrode assembly of stacked electrodes and separators. The cup part comprises a plurality of outer walls forming a periphery of the cup part, and a plurality of die edges connecting the plurality of outer walls to a side or degassing part. At least one of the die edges can be rounded to define a curvature radius of 1 mm or less. The cup part can have a depth of 6.5 mm or less.

Pouch-type battery case and pouch type secondary battery

A case for a secondary battery, in which an electrode assembly having a structure, in which electrodes and separators are alternately disposed, is accommodated, includes: a first recess part and a second recess part, each of which has a recessed shape; a circumferential part configured to surround a circumference of each of the first recess part and the second recess part when the case is unfolded; and a connection part provided between the first recess part and the second recess part to connect the first recess part to the second recess part, wherein, when the case is unfolded, the connection part has a shape that is recessed from each of the first recess part and the second recess part in one direction.

Case for secondary battery and secondary battery

A device for folding a pouch having first and second cup parts, first and second circumferential parts formed flat along circumferences thereof, respectively, includes: lower and upper nests on which the first and second cup parts are seated; first and second guides fixed to the lower and upper nests and having first and second protrusions protruding upwardly therefrom, the first and second protrusions in close contact with each other forming a support protrusion; and a pressing part allowing a connection part of the first and second circumferential parts to be in close contact with the support protrusion when the first and the second cup parts are seated on the lower and the upper nests, respectively, wherein when the pressing part causes the connection part and the support protrusion to be in contact, the upper nest rotates so that the second cup part is folded onto the first cup part.

Device for folding pouch

A secondary battery case includes a recess part recessed downward, and a sealing part provided around the recess part when the secondary battery case is unfolded. At least portions of the sealing part are attached to each other to seal inner surfaces of the recess part from an outside. A secondary battery includes an electrode assembly and the secondary battery case. The recess part of the secondary battery case has a width that corresponds to a thickness of the electrode assembly.

Secondary battery case, and secondary battery

Battery

A pouch-type battery case includes a cup portion, which accommodates therein an electrode assembly formed by stacking an electrode and a separator, and a plurality of die edges connecting an outer wall of the cup portion to a side extending from the outer wall. The die edges include a first region, which is rounded at a first radius (r) of curvature and at which an electrode tab extending from the electrode is positioned, and a second region which is other than the first region and rounded at one or more second radii (r, r, r) of curvature less than or equal to the first radius (r) of curvature. The second region is divided into an inner region and an outer region with respect to the first region, and the radius (r) of curvature in the inner region differs from the radii (r, r) of curvature in the outer region.

Pouch-type battery case, apparatus for forming same, and pouch-type secondary battery

Provided is a pouch type battery case. The pouch type battery case include a cup part configured to accommodate an electrode assembly, which is formed by stacking electrodes and separators, therein and a plurality of die edges configured to connect an outer wall of the cup part to a side extending from the outer wall. At least one die edge includes a first area formed to be rounded with a first curvature radius and a second area formed to be rounded with a second curvature radius less than the first curvature radius.

Pouch type battery case, apparatus for molding the same, and pouch type secondary battery

A method for calculating the process capacity at a specific temperature of a lithium secondary battery includes a correction to a process capacity (Q) at a specific temperature (T) is performed using a value (Q&#x2212;Q) obtained by subtracting the charge capacity (Q) at the time of the shipping charge from the discharge capacity (Q) measured at a discharge temperature (T). A system for calculating a process capacity of a lithium secondary battery is provided.

Method for calculating process capacity of lithium secondary battery

An electrode assembly and a method for manufacturing the electrode assembly comprises a plurality of unit cells comprising a positive electrode, a negative electrode, and a separator, respectively, and a separation film folded to be disposed between the plurality of unit cells. The separation film is folded two times or more to come into contact with and surround a first unit cell, which is disposed at an initial position of the separation film, of the plurality of unit cells.

Electrode assembly and method for manufacturing the same

Provided are a secondary battery in which a sealing part is prevented from damaged by external force and a method for manufacturing the same. The method for manufacturing the secondary battery includes a preparation process of preparing a pouch in which an electrode assembly and an electrolyte are accommodated, a bonding process of bonding a bonding area disposed on a circumferential portion of the pouch by using a bonding device; and a sealing process of sealing a portion of the outside of the bonding area of the pouch that is bonded in the bonding process by using a sealing device.

Secondary battery and method for manufacturing the same

A pressure-sensitive adhesive composition, a pressure-sensitive adhesive polarizing plate and a liquid crystal display device are provided. The pressure-sensitive adhesive composition has excellent durability reliability under extreme conditions such as high temperature and/or humidity conditions, and shows superior workability such as cuttability or re-workability. Also, when the pressure-sensitive adhesive composition is applied to a polarizing plate or a liquid crystal display device, the composition can effectively prevent light leakage. Such a pressure-sensitive adhesive exhibits excellent characteristics, for example, even when the pressure-sensitive adhesive is applied to a 20-inch or more large display device.

Pressure-sensitive adhesive composition

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Daejeon, South Korea

Jeong Min Ha