Battery cell having hole
AssigneeLG Chem, Ltd.
InventorsJung Woo Yoo, Je Young Kim, Geun Chang Chung
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Abstract
Disclosed herein is a battery cell configured to have a structure in which a stacked structure including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode is mounted in a receiving part of a battery case, one or more holes are formed from the battery case to the positive electrode or the negative electrode of the electrode assembly, and a transparent window is formed in a portion of the battery case corresponding to the holes.
Claims20
A battery cell configured to have a structure in which
- an electrode assembly of a stacked structure comprising a repeating pattern of a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode is mounted in a receiving part of a battery case,
- one or more holes are formed in the battery case opposite to an outermost positive electrode or an outermost negative electrode of the electrode assembly, and
- a transparent window is formed in a portion of the battery case corresponding to the one or more holes so as to cover the one or more holes,
- wherein at least one of the positive electrodes or the negative electrodes in the stacked structure includes a through hole aligned with the one or more holes formed in the battery case, and
- wherein at least one of the positive electrodes or the negative electrodes in the stacked structure does not include the through hole aligned with one or more of the holes formed in the battery case.
A battery cell configured to have a structure in which an electrode assembly is mounted in a receiving part of a battery case, wherein the electrode assembly is a jelly-roll type electrode assembly configured to have a structure in which a positive electrode sheet and a negative electrode sheet are wound in a state in which a separation sheet is interposed between the positive electrode sheet and the negative electrode sheet to form repeatedly rolled layers of a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, one or more holes are formed in the battery case opposite to an outermost positive electrode or an outermost negative electrode of the electrode assembly, and a transparent window is formed in a portion of the battery case corresponding to the one or more holes so as to cover the one or more holes, wherein at least one of the rolled layers of the positive electrode or the negative electrode includes a through hole aligned with the one or more holes formed in the battery case, and wherein at least one of the rolled layers of the positive electrode or the negative electrode does not include the through hole aligned with one or more of the holes formed in the battery case.
Dependencies are inferred from the claim text.