Battery Cell and Battery Module Comprising Same
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United States of America Patent
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Issued Date -
Aug 8, 2024
app pub date -
Jan 20, 2023
filing date -
Jan 24, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
Disclosed is a battery cell, which includes a battery case having an accommodation portion in which an electrode assembly is mounted, and a sealing portion formed by sealing an outer periphery thereof. The battery case further includes an electrode lead electrically connected to an electrode tab included in the electrode assembly and protruding out of the battery case through the sealing portion, and a lead film located at a portion corresponding to the sealing portion in at least one of an upper portion and a lower portion of the electrode lead. The lead film has a dented portion recessed in an outer direction of the battery case and opened toward the inside of the battery case. The battery cell also has a coating layer located on a gas discharge portion of the lead film that contains a fluorine-based polymer.
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