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US 12,763,405 B2Granted
Pouch type battery case and pouch type secondary battery
AssigneeLG Energy Solution, Ltd.
InventorsSe Young Oh, Jeong Min Ha, Geun Hee Kim, Hyun Beom Kim, Hyung Ho Kwon
Life of this patent
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Abstract
A pouch-type battery case according to an embodiment of the present invention for achieving the above objects includes: a first case and a second case, in which cup parts each of which is configured to accommodate an electrode assembly, in which electrodes and separators are stacked, therein is formed, respectively; and a bridge formed between the two cup parts, wherein the bridge has a thickness of 2 mm or less.
Claims21
A pouch-type battery case, comprising:
- a first case and a second case defining a cup part formed of a first cup part and a second cup part, the cup part being configured to accommodate an electrode assembly, in which electrodes and separators are stacked, respectively;
- and
- a bridge formed between the first and second cup parts,
- wherein a thickness of the bridge is:
- 2 mm or less;
- and/or
- between 1/200 and 1/30 of a width of the electrode assembly,
- wherein each one of the first and second cup parts comprise a plurality of punch edges, which connect a plurality of outer walls configured to surround a periphery thereof to a bottom part, respectively, and at least one of the punch edges is rounded,
- wherein the first and second cup parts further comprise a thickness edge configured to connect two outer walls adjacent to each other, and
- wherein the thickness edge is connected to the two punch edges adjacent to each other to form corners.
7 more elements
A pouch-type secondary battery comprising:
- an electrode assembly in which electrodes and separators are stacked;
- a pouch-type battery case comprising a cup part configured to accommodate the electrode assembly therein,
- wherein the pouch-type battery case comprises:
- a first case and a second case, of which at least one comprises a cup part;
- and
- a folding part configured to integrally connect the first case to the second case,
- wherein the folding part has a width of 1 mm to 3.2 mm,
- wherein the cup part comprises a plurality of punch edges, which connect a plurality of outer walls configured to surround a periphery thereof to a bottom part, respectively, and at least one of the punch edges is rounded,
- wherein the cup part further comprise a thickness edge configured to connect two outer walls adjacent to each other, and
- wherein the thickness edge is connected to the two punch edges adjacent to each other to form corners.
7 more elements
Dependencies are inferred from the claim text.