A battery cell is configured such that a jelly-roll type electrode assembly is accommodated in a battery casing, and includes: the battery casing including upper, lower, and side surfaces, wherein the side surface of the battery casing includes an isolation wall providing a buffer space between the battery casing and the electrode assembly. The buffer space accommodates deformation of the electrode assembly when the electrode assembly is expanded, such that deformation of the side surface of the battery casing is prevented from occurring.

The present invention features a pouch comprising a single layer of polymer material having a first surface and a second surface, wherein the second surface is disposed to define an interior space surrounded by the second surface of the pouch, and wherein the first surface is disposed to define the exterior of the pouch, wherein the single layer has a uniform thickness between the first surface and second surface, wherein the polymer material comprises a liquid crystal polymer, and wherein the pouch has a water vapor transmission rate of less than 0.1 g/m2/day between the interior space and the first surface of the pouch.

The present invention features a pouch comprising a single layer of polymer material having a first surface and a second surface, wherein the second surface is disposed to define an interior space surrounded by the second surface of the pouch, and wherein the first surface is disposed to define the exterior of the pouch, wherein the single layer has a uniform thickness between the first surface and second surface, wherein the polymer material comprises a liquid crystal polymer, and wherein the pouch has a water vapor transmission rate of less than 0.1 g/m2/day between the interior space and the first surface of the pouch.

A case having elasticity corresponding to expansion and contraction of a stacked body housed therein and a method for manufacturing the same, a method for inserting the stacked body into the case, and a cell stack using the case are provided. A case configured to house a stacked body includes two opposed contact parts in contact with the stacked body, and two spring structures connecting the two contact parts with each other.

This invention concerns an electrochemical element, in particular a sulphurous solid electrolyte element, comprising a protective casing, as well as modules and batteries comprising such elements.

This invention concerns an electrochemical element, in particular a sulphurous solid electrolyte element, comprising a protective casing, as well as modules and batteries comprising such elements.

Disclosed is a packaging for a flexible secondary battery comprising a first polymer resin layer, a barrier layer formed on the first polymer resin layer to block water and gas, and a second polymer resin layer formed on the barrier layer. The thickness of the barrier layer is 30 to 999 nm. The barrier layer is multi-layered, and comprises graphene, a dispersing agent, and pyrene as a flexible linking agent, in which there is π-π conjugation (interaction) between the graphene and the pyrene. Also disclosed is a flexible secondary battery comprising the packaging.

Disclosed is a packaging for a flexible secondary battery comprising a first polymer resin layer, a barrier layer formed on the first polymer resin layer to block water and gas, and a second polymer resin layer formed on the barrier layer. The thickness of the barrier layer is 30 to 999 nm. The barrier layer is multi-layered, and comprises graphene, a dispersing agent, and pyrene as a flexible linking agent, in which there is π-π conjugation (interaction) between the graphene and the pyrene. Also disclosed is a flexible secondary battery comprising the packaging.

A battery cell includes an electrode assembly and a housing. A thickness of the electrode assembly is T1 mm. The housing includes a first surface; a second surface at a distance T2 mm from the first surface; a first lateral edge with arc shape and connected to the second surface and possessing a radius of R mm; a third surface connected to the first lateral edge; and a second lateral edge including a first part extending away from the electrode assembly by starting from a first edge of the first surface and a second edge of the third surface, and a second part extending toward the electrode assembly and possessing an ending edge connected to the third surface. Along the thickness direction, a distance between the second edge of the third surface and the ending edge is Z mm, and (T2−Z)/2≤R≤T1/2+0.3.

A battery cell includes an electrode assembly and a housing. A thickness of the electrode assembly is T1 mm. The housing includes a first surface; a second surface at a distance T2 mm from the first surface; a first lateral edge with arc shape and connected to the second surface and possessing a radius of R mm; a third surface connected to the first lateral edge; and a second lateral edge including a first part extending away from the electrode assembly by starting from a first edge of the first surface and a second edge of the third surface, and a second part extending toward the electrode assembly and possessing an ending edge connected to the third surface. Along the thickness direction, a distance between the second edge of the third surface and the ending edge is Z mm, and (T2−Z)/2≤R≤T1/2+0.3.