公开(公告)号：US10147914B2

公开(公告)日：2018-12-04

申请号：US15104862

申请日：2015-02-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomohiro Ueda ,  Yuya Asano ,  Yoko Sano

IPC: H01M2/02 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/0565 ,  H01M6/16 ,  H01M10/0566 ,  H01M10/0585 ,  H01M4/13 ,  H01M4/62

Abstract: A thin battery includes a sheet-like electrode assembly; a non-aqueous electrolyte with which the electrode assembly is impregnated; and a housing in a sealed manner. The electrode assembly includes a pair of first electrodes located at an outermost side of the electrode assembly, a second electrode interposed between the pair of first electrodes, and a separator disposed between each first electrode and the second electrode. The first electrode includes a first current collector sheet and a first active material layer attached to one surface of the first current collector sheet. The second electrode includes a second current collector sheet and second active material layers attached to both surfaces of the second current collector sheet. A content x of the non-aqueous electrolyte per unit area of the first active material layer is larger than a content y of the non-aqueous electrolyte per unit area of the second active material layer.

公开(公告)号：US09666903B2

公开(公告)日：2017-05-30

申请号：US14762457

申请日：2014-02-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yoko Sano ,  Keisuke Yoneda

IPC: H01M2/02 ,  H01M10/0566 ,  H01M10/0587 ,  H01M2/04 ,  H01M10/0525

CPC classification number: H01M10/0566 ,  H01M2/022 ,  H01M2/0413 ,  H01M2/046 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2220/30

Abstract: There is provided a cylindrical pin-type lithium-ion secondary battery having excellent high temperature storage characteristics and charge-discharge cycle characteristics. The battery includes: a bottom-closed cylindrical battery case having an opening portion; a wound-type electrode assembly and a non-aqueous electrolyte housed in the battery case; and a sealing plate sealing the opening portion. The battery has: an outer diameter R of 3 to 6.5 mm; a height H of 15 to 65 mm; an amount of the non-aqueous electrolyte per discharge capacity of 1 mAh of 1.7 to 2.8 μL; and a packing ratio of 71 to 85%.