Lithium secondary battery case for suppressing deformation of electrode assembly
AssigneeLG Energy Solution, Ltd.
InventorSung Hoon Yu
Life of this patent
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Abstract
A lithium secondary battery case composed of laminate sheet including an outer layer/barrier layer/inner layer structure is provided. The case includes a first region in which gas discharge is easier or expansion is relatively easier compared to a second region. The second region is a remaining region that excludes the first region. The laminate sheet forms the first region by either not including the barrier layer or including a barrier layer having a slit therein.
Claims13
A battery case for a lithium secondary battery made of a laminate sheet including an outer layer/barrier layer/inner layer-structure, the battery case comprising:
- a first region that is a region in which gas is discharged or is a region that is relatively easily expanded compared to a second region of the battery case;
- and
- the second region which is a remaining region excluding the first region,
- wherein, in the first region, the laminate sheet constituting the first region does not include the barrier layer,
- wherein the second region is constituted by the laminate sheet comprising the outer layer, the barrier layer, and the inner layer, and
- wherein, in the first region, the laminate sheet is constituted by the outer layer and the inner layer being directly laminated to each other without the barrier layer disposed therebetween.
A battery case for a lithium secondary battery made of a laminate sheet including an outer layer, a barrier layer, and an inner layer, the battery case comprising:
- a first region that is a region in which gas is discharged or is a region that is relatively easily expanded compared to a second region of the battery case;
- and
- the second region which is a remaining region excluding the first region,
- wherein, in the first region, the laminate sheet comprises a slit formed through only the barrier layer, and
- wherein the inner layer and the outer layer are continuous and un-slitted layers that are respectively laminated on opposite sides of the barrier layer so as to cover the slit.
Dependencies are inferred from the claim text.