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公开(公告)号：US20230042848A1
公开(公告)日：2023-02-09
申请号：US17788083
申请日：2020-12-15
发明人： Takafumi Hosokawa , Taiki Nonaka
IPC分类号： H01M10/0583 , H01M50/451 , H01M50/46
摘要： This secondary battery is provided with an electrode body formed by laminating a positive electrode and a negative electrode with a separator interposed therebetween. The separator includes a first layer and a second layer having a lesser thermal shrinkage than the first layer, and has a tubular part that is formed in a tubular shape and that constitutes the outermost surface of the electrode body. The tubular part, of the separator, that constitutes the outermost surface of the electrode body has a tape stuck thereto in at least one end portion in the axial direction, the tape pressing the one end portion in the axial direction from one side to the other side in the lamination direction of the electrode body.
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公开(公告)号：US20230044640A1
公开(公告)日：2023-02-09
申请号：US17788432
申请日：2020-12-15
发明人： Shuji Ogawa , Takashi Hosokawa , Takafumi Hosokawa
IPC分类号： H01M10/0587 , H01M10/0525
摘要： This non-aqueous electrolyte secondary battery comprises an electrode body in which a first separator, a positive electrode plate, a second separator, and a negative electrode plate are layered and coiled for 10 or more turns. The electrode body includes: a flat section in which the outer peripheral surface is flat; and two curved surface sections which are disposed at both ends in a first direction of the flat section and in which the outer peripheral surface is curved. The non-aqueous electrolyte secondary battery includes: a winding-end tape that is adhered to the outermost peripheral surface of the electrode body; and a positive electrode protective tape that is adhered to a winding-start-side end section on the inner peripheral side of the positive electrode plate. The winding-end tape is disposed on one of the two curved surface sections.
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公开(公告)号：US20230036396A1
公开(公告)日：2023-02-02
申请号：US17788085
申请日：2020-12-15
发明人： Takafumi Hosokawa , Taiki Nonaka
IPC分类号： H01M50/489 , H01M50/451 , H01M50/46 , H01M50/466
摘要： This secondary battery comprises an electrode body obtained by laminating positive electrodes and negative electrodes with a separator interposed therebetween. The separator includes a first layer and a second layer having lower thermal shrinkage than the first layer, and has a tubular section that is formed into a tube shape and constitutes the outermost surface of the electrode body. The separator is arranged such that, in the tubular section thereof, the first layer faces the inside and the second layer faces the outside.
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公开(公告)号：US12080855B2
公开(公告)日：2024-09-03
申请号：US17286683
申请日：2019-11-25
IPC分类号： H01M10/0587 , H01M10/0525 , H01M50/46 , H01M50/463 , H01M50/489 , H01M50/409
CPC分类号： H01M10/0587 , H01M10/0525 , H01M50/46 , H01M50/463 , H01M50/489 , H01M50/409
摘要： A decrease in energy density of a battery is suppressed, and the occurrence of internal short circuit between a positive plate and a negative plate located at the innermost circumference of a curved portion of a flat electrode assembly, where the curvature of the curved portion is greatest, is suppressed. In a nonaqueous electrolyte secondary battery including a flat wound electrode assembly (14), the electrode assembly (14) has a pair of curved portions (20A, 20B) located at either end and a flat portion (21) located between the pair of curved portions. In at least one of the curved portions, at least two layers of a second electrode plate are disposed on an inner side of a curved portion of a first electrode plate located at an innermost circumference.
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公开(公告)号：US20210351441A1
公开(公告)日：2021-11-11
申请号：US17286683
申请日：2019-11-25
IPC分类号： H01M10/0587 , H01M50/463 , H01M50/46 , H01M10/0525
摘要： A decrease in energy density of a battery is suppressed, and the occurrence of internal short circuit between a positive plate and a negative plate located at the innermost circumference of a curved portion of a flat electrode assembly, where the curvature of the curved portion is greatest, is suppressed. In a nonaqueous electrolyte secondary battery including a flat wound electrode assembly (14), the electrode assembly (14) has a pair of curved portions (20A, 20B) located at either end and a flat portion (21) located between the pair of curved portions. In at least one of the curved portions, at least two layers of a second electrode plate are disposed on an inner side of a curved portion of a first electrode plate located at an innermost circumference.
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