Pouch-type secondary battery and battery module
AssigneeLG Energy Solution, Ltd.
InventorsSe Young Oh, Jeong Min Ha, Geun Hee Kim, Hyun Beom Kim
Life of this patent
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Abstract
A pouch-type secondary battery according to an embodiment of the present invention for achieving the above object includes: an electrode assembly in which electrodes and separators are stacked; a pouch-type battery case comprising a first case and a second case, wherein at least one the first case and the second case comprises a cup part configured to accommodate the electrode assembly; a folding part coupling the first case to the second case; and a protrusion protruding from a portion of each of opposing ends of the folding part, wherein the protrusion has a length of 1.5 mm or less.
Claims25
A secondary battery comprising:
- an electrode assembly in which electrodes and separators are stacked;
- a pouch-type battery case including:
- a first case and a second case, wherein one or both of the first case and the second case comprises a cup part configured to accommodate the electrode assembly;
- a folding part coupling the first case to the second case, the folding part having opposing ends in a length direction of the folding part;
- and
- a protrusion protruding from a portion of each of the opposing ends of the folding part,
- wherein the protrusion extends outward 1.5 mm or less beyond a portion of the folding part that is adjacent the one or both cup parts.
A secondary battery comprising:
- an electrode assembly in which electrodes and separators are stacked;
- a pouch-type battery case including:
- a first case and a second case, wherein one or both of the first case and the second case comprises a cup part configured to accommodate the electrode assembly;
- a folding part coupling the first case to the second case, the folding part having opposing ends in a length direction of the folding part;
- and
- a protrusion protruding from a portion of each of the opposing ends of the folding part,
- wherein an angle between the length direction of the folding part and an inner edge of the protrusion is greater than 151 degrees.
A battery module comprising:
- a secondary battery including:
- an electrode assembly in which electrodes and separators are stacked, and
- a pouch-type battery case forming a cup part accommodating the electrode assembly;
- and
- a housing accommodating the secondary battery,
- wherein the pouch-type battery case includes:
- a first case and a second case, wherein at least one of the first case or the second case comprises the cup part;
- a folding part coupling the first case to the second case, the folding part having opposing ends in a length direction of the folding part;
- and
- a protrusion protruding from a portion of each of the opposing ends of the folding part,
- wherein the protrusion extends outward 1.5 mm or less beyond a portion of the folding part that is adjacent to the cup part.
A battery module comprising:
- a secondary battery including:
- an electrode assembly in which electrodes and separators are stacked, and
- a pouch-type battery case forming a cup part accommodating the electrode assembly;
- and
- a housing accommodating the secondary battery,
- wherein the pouch-type battery case includes:
- a first case and a second case, wherein at least one of the first case or the second case comprises the cup part;
- a folding part coupling the first case to the second case, the folding part having opposing ends in a length direction of the folding part;
- and
- a protrusion protruding from a portion of each of the opposing ends of the folding part,
- wherein an angle between the length direction of the folding part and an inner edge of the protrusion is greater than 151 degrees.
Dependencies are inferred from the claim text.