BATTERY CASE, BATTERY, AND METHOD FOR FABRICATING BATTERY

• Main Authors: HYUN SONG WON, LEE JUNG-HOON, JUNG MOON-IL, LEE IN SU, LEE HYE JEONG, LEE MOO HO, KIM IN KI, KIM GINAM
• Format: Patent
• Language: English; Japanese
• Published: 27.06.2019
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

To provide a battery case, a battery and a method for fabricating the battery which realize excellent moisture transmission resistance.SOLUTION: A battery case includes a container configured to house an electrode assembly. The container includes a bottom wall and a plurality of side walls. The bottom wall and the plurality of side walls are integrated to define a space for housing the electrode assembly with an open side opposite to the bottom wall. The container is a molding of a composition, including a base polymer and an inorganic moisture absorbent dispersed in the base polymer. The battery case has a water vapor transmission rate (WVTR) of less than about 0.05 g/m/day, when measured at 38°C and a relative humidity of 100% according to "ISO 15106" or "ASTM F1249".SELECTED DRAWING: Figure 1 【課題】耐透湿性に優れた電池ケース、電池、及び電池の製造方法を提供する。【解決手段】本発明による電池ケースは、電極組立体を収容する収容部を含む電池ケースであって、前記収容部は、下部壁及び複数の側壁を含み、前記下部壁及び前記側壁は、一体化して前記下部壁に対向する開放面（ｏｐｅｎ ｓｉｄｅ）を有して前記電極組立体が収容される空間を形成し、前記収容部は、ベースポリマー、及びベースポリマーに分散された無機吸湿剤を含む組成物の成形品であり、「ＩＳＯ １５１０６」又は「ＡＳＴＭ Ｆ１２４９」により３８℃及び相対湿度１００％で測定した水蒸気透過率（ＷＶＴＲ）が、０．０５ｇ／ｍ２／ｄａｙ未満である。【選択図】 図１