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US 11,539,089 B2Granted
Pouch-type secondary battery and battery module comprising the same
AssigneeSK Innovation Co., Ltd.
InventorsTae Il Kim, Jae Man Seo, Jeong Sam Son, Gyu Jin Chung
Life of this patent
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Abstract
A pouch-type secondary battery includes an electrode assembly; and a pouch member comprising an accommodating portion configured to accommodate the electrode assembly therein, a sealing portion formed at an edge of the accommodating portion, and an indent portion formed of a cutting edge cut at a plurality of angles and a rounded edge cut to connect the cutting edges adjacent to each other in a portion of the sealing portion corresponding to a vertex of the accommodating portion.
Claims20
A pouch-type secondary battery comprising:
- an electrode assembly;
- and
- a pouch member comprising an accommodating portion configured to accommodate the electrode assembly therein, and a sealing portion formed at outer edges of the pouch member adjacent to the accommodating portion,
- wherein the sealing portion includes at least one indent portion adjacent to a corner of the accommodating portion,
- wherein the at least one indent portion includes a first cutting edge, a second cutting edge and a rounded edge connecting the first and second cutting edges, and
- wherein the first cutting edge is cut at a first cutting edge angle, and the second cutting edge is cut at a second cutting edge angle.
3 more elements
A secondary battery comprising:
- an electrode assembly;
- a pouch member including an accommodating portion for accommodating the electrode assembly therein, a sealing portion at outer edges of the pouch member forming three sealed sides which extend laterally from the accommodating portion, and a non-sealed side extending substantially in parallel to one side of the electrode assembly;
- a lead tab portion extending through each of two opposite sealed sides of the pouch member;
- wherein the sealing portion includes four indent portions at four corners thereof corresponding at four corners of the pouch member reducing the area occupied by the sealing portion,
- wherein the electrode assembly is arranged so as to be biased toward the non-sealed side of the pouch member.
2 more elements
Dependencies are inferred from the claim text.