Pouch film and secondary battery including the same
Summary
USPTO granted Patent US12592464B2 to SK On Co., Ltd. for a pouch film design used in secondary batteries. The invention addresses gas chamber deformation during electrolyte injection, including a deformation part in the gas chamber passage to prevent electrolyte backflow. The patent contains 19 claims covering the pouch film structure and its integration in secondary batteries.
What changed
USPTO issued Patent US12592464B2 titled 'Pouch film and secondary battery including the same' to assignee SK On Co., Ltd. (inventor: Hyo Sang Kim). The patent covers a pouch film design for secondary batteries that addresses electrolyte handling during manufacturing. The design includes a deformation part in the gas chamber passage to prevent electrolyte backflow while maintaining the gas chamber inlet shape during electrolyte injection. The application (17834422) was filed on June 7, 2022, and the patent contains 19 claims.
Patent grants establish intellectual property rights but do not create immediate compliance obligations for battery manufacturers. Companies manufacturing pouch-type lithium-ion batteries may wish to review the claims to assess potential freedom-to-operate considerations or licensing needs. The patent provides SK On with enforceable exclusionary rights in the United States for the claimed pouch film technology through the patent term.
Source document (simplified)
Pouch film and secondary battery including the same
Grant US12592464B2 Kind: B2 Mar 31, 2026
Assignee
SK On Co., Ltd.
Inventors
Hyo Sang Kim
Abstract
Embodiments of the present invention provides a pouch film. In manufacturing a secondary battery, a gas may be generated when reacting an electrode assembly with an electrolyte. After the generated gas is discharged, the pouch film may be sealed. In this case, a deformation part may be formed in the gas chamber section which serves as a passage for discharging the gas, specifically, in the gas chamber passage, thus to prevent the electrolyte from flowing backward and maintain shapes of the gas chamber inlet during injecting the electrolyte.
CPC Classifications
H01M 50/73 H01M 50/105 H01M 50/394 H01M 50/557 H01M 10/049 H01M 10/058 H01M 50/548 H01M 50/119 H01M 50/627
Filing Date
2022-06-07
Application No.
17834422
Claims
19
Named provisions
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