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公开(公告)号：US20210194013A1
公开(公告)日：2021-06-24
申请号：US16757886
申请日：2019-02-04
发明人： Hideo Kasahara , Yuma Kamiyama , Hiromasa Yagi , Hiroyuki Tajima
摘要： An electrode for a secondary battery that includes a collector and an active material layer formed on the collector. The active material layer is configured of a plurality of layers including at least a first layer formed on the collector, and a second layer formed on the first layer. An end portion of the collector at an edge portion of the electrode is widened in an electrode thickness direction with respect to a plate thickness of the collector.
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2.发明授权公开(公告)号：US11978895B2
公开(公告)日：2024-05-07
申请号：US17299536
申请日：2019-12-17
发明人： Hiroyuki Tajima , Tetsuya Sato
IPC分类号： H01M4/46 , H01M4/70 , H01M50/534 , H01M50/536
CPC分类号： H01M4/463 , H01M4/70 , H01M50/534 , H01M50/536
摘要： A secondary battery with a positive electrode plate having a metallic positive electrode core body and positive electrode active material layers formed on both surfaces of the positive electrode core body. The positive electrode core body has an active material layer-free region in which the positive electrode active material layers are not formed on the surface of the positive electrode core body, wherein a first protrusion protruding in the thickness direction of the positive electrode core body from one surface of the positive electrode core body is formed at the end of the active material layer-free region, positive electrode protection layers are formed in a portion adjacent to the positive electrode active material layers on one surface of the positive electrode core body in the active material layer-free region, and the protrusion height T1 of the first protrusion is less than the thickness T2 of the positive electrode protection layer.
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公开(公告)号：US20220029167A1
公开(公告)日：2022-01-27
申请号：US17311967
申请日：2019-12-17
发明人： Hiroyuki Tajima , Tetsuya Sato
IPC分类号： H01M4/62 , H01M50/534 , H01M4/66 , H01M4/134
摘要： Provided are: a highly reliable secondary battery electrode plate; and a secondary battery using same. The electrode plate is a positive electrode plate for a secondary battery, the positive electrode plate having a metallic positive electrode core body and a positive electrode active material layer formed on both surfaces of the positive electrode core body, wherein the positive electrode plate has a first edge and a positive electrode tab protruding from the first edge, and a fluorine-containing coating is formed on the end surface of the positive electrode core body at the first edge of the positive electrode plate. The secondary battery has the positive electrode plate and a negative electrode plate.
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公开(公告)号：US20220069283A1
公开(公告)日：2022-03-03
申请号：US17311961
申请日：2019-12-17
发明人： Hiroyuki Tajima , Tetsuya Sato
IPC分类号： H01M4/134 , H01M4/66 , H01M4/38 , H01M50/534
摘要： The present invention provides: an electrode plate for secondary batteries, which has high reliability; and a secondary battery which uses this electrode plate. A negative electrode plate for secondary batteries, which comprises: a negative electrode core body that is formed of a metal; and negative electrode active material layers that are formed on both surfaces of the negative electrode core body. This negative electrode plate has a first edge and a negative electrode tab which protrudes from the first edge; and a coating film containing silicon is formed on the end face of the negative electrode core body at the first edge. A secondary battery according to the present invention is provided with a positive electrode plate and the negative electrode plate.
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公开(公告)号：US20220059827A1
公开(公告)日：2022-02-24
申请号：US17299536
申请日：2019-12-17
发明人： Hiroyuki Tajima , Tetsuya Sato
IPC分类号： H01M4/46
摘要： A secondary battery with a positive electrode plate having a metallic positive electrode core body and positive electrode active material layers formed on both surfaces of the positive electrode core body. The positive electrode core body has an active material layer-free region in which the positive electrode active material layers are not formed on the surface of the positive electrode core body, wherein a first protrusion protruding in the thickness direction of the positive electrode core body from one surface of the positive electrode core body is formed at the end of the active material layer-free region, positive electrode protection layers are formed in a portion adjacent to the positive electrode active material layers on one surface of the positive electrode core body in the active material layer-free region, and the protrusion height T1 of the first protrusion is less than the thickness T2 of the positive electrode protection layer.
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