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公开(公告)号：US20200373582A1
公开(公告)日：2020-11-26
申请号：US16636818
申请日：2018-07-05
Inventor： Hajime Nishino , Satoko Motomatsu , Kazuhiro Yoshii , Takao Sato , Tomoki Shiozaki
Abstract: A nonaqueous electrolyte secondary battery with a positive electrode having a positive electrode current collector and a positive electrode active material layer that is supported by a first main surface and a second main surface. The first main surface includes a first exposed section on which the positive electrode active material layer is not arranged. A positive electrode lead is connected to the first exposed section and includes an extension section and an overlapping section. At least a portion of the first exposed section, along with at least a portion of the overlapping section, is covered with a positive electrode insulating tape which has a base, a first layer that adheres to the first exposed section and to the overlapping section, and a second layer interposed between the base and the first layer; and the second layer expands when heated above a threshold.
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公开(公告)号：US12206139B2
公开(公告)日：2025-01-21
申请号：US17283663
申请日：2019-10-04
Inventor： Tomoki Shiozaki , Kazuhiro Yoshii , Hajime Nishino
IPC: H01M50/586 , C08K3/22 , C08K3/32 , C09J7/25 , C09J133/08 , H01M4/02 , H01M4/525 , H01M10/0525 , H01M50/533 , H01M50/534 , H01M50/595
Abstract: A battery includes a positive electrode, a negative electrode, a positive electrode lead which is connected to the positive electrode, and a protective tape which covers the positive electrode lead. The protective tape includes a base material layer and an adhesive layer that is arranged on the base material layer; and the adhesive layer contains an adhesive material and a filler which contains at least one compound that is selected from among phosphoric acid group-containing compounds, boric acid group-containing compounds and silicic acid group-containing compounds.
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公开(公告)号：US12191472B2
公开(公告)日：2025-01-07
申请号：US16973622
申请日：2019-02-22
Inventor： Kazuhiro Yoshii
IPC: H01M4/131 , H01M4/02 , H01M4/04 , H01M4/134 , H01M10/0525 , H01M50/409 , H01M50/489
Abstract: A non-aqueous electrolyte secondary battery according to one aspect of the present application comprises: a positive electrode; a negative electrode; a heat-resistant layer that is formed on at least one of the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein the heat-resistant layer includes heat-resistant particles, at least the surface of said heat-resistant particles comprising a metal compound, the average thickness of the heat-resistant layer is within the range 0.5 μm-5 μm, the porosity of the heat-resistant layer is 25%-55%, the average surface roughness (Ra) of the heat-resistant layer is 0.35 μm or less, and the electronegativity of metal ions of the metal compound is 13.5 or greater.
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公开(公告)号：US11791467B2
公开(公告)日：2023-10-17
申请号：US16636818
申请日：2018-07-05
Inventor： Hajime Nishino , Satoko Motomatsu , Kazuhiro Yoshii , Takao Sato , Tomoki Shiozaki
IPC: H01M4/62 , H01M4/36 , H01M4/66 , H01M10/0525 , H01M50/46 , H01M50/531 , H01M50/595 , H01M50/534 , H01M4/02
CPC classification number: H01M4/626 , H01M4/366 , H01M4/662 , H01M10/0525 , H01M50/46 , H01M50/531 , H01M50/534 , H01M50/595 , H01M2004/027 , H01M2004/028
Abstract: A nonaqueous electrolyte secondary battery with a positive electrode having a positive electrode current collector and a positive electrode active material layer that is supported by a first main surface and a second main surface. The first main surface includes a first exposed section on which the positive electrode active material layer is not arranged. A positive electrode lead is connected to the first exposed section and includes an extension section and an overlapping section. At least a portion of the first exposed section, along with at least a portion of the overlapping section, is covered with a positive electrode insulating tape which has a base, a first layer that adheres to the first exposed section and to the overlapping section, and a second layer interposed between the base and the first layer; and the second layer expands when heated above a threshold.
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公开(公告)号：US20220149496A1
公开(公告)日：2022-05-12
申请号：US17435232
申请日：2019-12-18
Inventor： Kazuhiro Yoshii , Satoru Tachibana
IPC: H01M50/593 , H01M50/54
Abstract: This secondary battery is characterized by being provided with: a positive electrode; and a positive electrode lead that is connected to the positive electrode, wherein the positive electrode has a positive electrode collector and a positive electrode active material layer formed in at least one surface of the positive electrode collector, at least one of the surfaces of the positive electrode has a laminated part in which the positive electrode active material layer is formed, and an exposed part in which the positive electrode collector is exposed, and the positive electrode lead has an one-end part connected to the exposed part and an extended part which extends from the one-end part to the outside of the positive electrode. The secondary battery is further provided with an insulating member that has a base material part, a heat resistant and an adhesive part.
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Patent Agency Ranking
公开(公告)号：US20200168886A1
公开(公告)日：2020-05-28
申请号：US16637122
申请日：2018-06-28
Inventor： Takao Sato , Kazuhiro Yoshii
Abstract: A secondary battery includes an electrode body formed by layering a positive electrode and a negative electrode with a separator therebetween, an electrolyte, and insulating tape adhered to at least one of the positive electrode and the negative electrode. The insulating tape includes a base layer formed of an insulating organic material, an adhesive layer, and a porous layer that is interposed between the base layer and the adhesive layer and that has a pore that an electrolytic solution is allowed to enter.
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7.发明申请公开(公告)号：US20220376227A1
公开(公告)日：2022-11-24
申请号：US17763087
申请日：2020-07-21
Inventor： Yuta Kuroda , Kazuhiro Yoshii , Yuji Oura
IPC: H01M4/36 , H01M10/0525 , H01M4/583
Abstract: A negative electrode for lithium ion secondary batteries according to the present invention is provided with a negative electrode collector and a negative electrode mixture layer that is formed on the negative electrode collector; the negative electrode mixture layer comprises a negative electrode active material which contains graphite particles A that have an internal porosity of 10% or less, graphite particles B that have an internal porosity of more than 10%, and an alloying material that is alloyed with lithium; and the content of the alloying material is 15% by mass or less relative to the total amount of the negative electrode active material in the negative electrode mixture layer.
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公开(公告)号：US20220166004A1
公开(公告)日：2022-05-26
申请号：US17441458
申请日：2020-01-21
Inventor： Takahiro Takahashi , Kazuhiro Yoshii
Abstract: This secondary battery comprises: a positive electrode including a positive electrode core and a positive electrode mixture layer provided on the surface of the positive electrode core; and a negative electrode including a negative electrode core and a negative electrode mixture layer provided on the surface of the negative electrode core. At least one among the positive electrode mixture layer and the negative electrode mixture layer has a layer thickness variation coefficient of 0.01-0.30 or a layer surface tortuosity of 1.2-2.0.
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公开(公告)号：US20220013875A1
公开(公告)日：2022-01-13
申请号：US17283663
申请日：2019-10-04
Inventor： Tomoki Shiozaki , Kazuhiro Yoshii , Hajime Nishino
IPC: H01M50/595 , H01M50/531 , H01M50/586 , H01M10/0525 , C09J133/08 , H01M4/525 , C09J7/25
Abstract: A battery includes a positive electrode, a negative electrode, a positive electrode lead which is connected to the positive electrode, and a protective tape which covers the positive electrode lead. The protective tape includes a base material layer and an adhesive layer that is arranged on the base material layer; and the adhesive layer contains an adhesive material and a filler which contains at least one compound that is selected from among phosphoric acid group-containing compounds, boric acid group-containing compounds and silicic acid group-containing compounds.
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公开(公告)号：US20210249642A1
公开(公告)日：2021-08-12
申请号：US16973622
申请日：2019-02-22
Inventor： Kazuhiro Yoshii
IPC: H01M4/04 , H01M4/131 , H01M4/134 , H01M10/0525
Abstract: A non-aqueous electrolyte secondary battery according to one aspect of the present application comprises: a positive electrode; a negative electrode; a heat-resistant layer that is formed on at least one of the positive electrode and the negative electrode; and a non-aqueous electrolyte, wherein the heat-resistant layer includes heat-resistant particles, at least the surface of said heat-resistant particles comprising a metal compound, the average thickness of the heat-resistant layer is within the range 0.5 μm-5 μm, the porosity of the heat-resistant layer is 25%-55%, the average surface roughness (Ra) of the heat-resistant layer is 0.35 μm or less, and the electronegativity of metal ions of the metal compound is 13.5 or greater.
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