公开(公告)号：US20220376258A1

公开(公告)日：2022-11-24

申请号：US17771280

申请日：2020-10-19

Applicant: SANYO Electric Co., Ltd.

Inventor： Na Wang ,  Daisuke Ikeda ,  Kentaro Takahashi

IPC: H01M4/62 ,  H01M10/0587 ,  H01M4/583 ,  H01M4/133

Abstract: This non-aqueous electrolyte secondary battery is provided with: an electrode body that has a positive electrode and a negative electrode; and an outer package in which the electrode body is accommodated. The negative electrode comprises a negative electrode core body and a negative electrode mixture layer formed on the surface of the negative electrode core body. The negative electrode mixture layer comprises: a negative electrode active material that has a tap density of 1.00-1.20 g/cm3; CMC, the content of which accounts for 0.6-0.8 mass % in the negative electrode mixture layer; and SBR, the content of which accounts for 0.4-0.8 mass % in the negative electrode mixture layer. The mass ratio of the content of CMC to the content of SBR in the negative electrode mixture layer is less than 2, and the total content of CMC and SBR in the negative electrode mixture layer is less than 1.5 mass %.

公开(公告)号：US20140045044A1

公开(公告)日：2014-02-13

申请号：US13962183

申请日：2013-08-08

Applicant: SANYO Electric Co., Ltd.

Inventor： Daisuke Ikeda ,  Keisuke Minami ,  Toyoki Fujihara ,  Toshiyuki Nohma

IPC: H01M10/0563 ,  H01M10/052 ,  H01M4/13 ,  H01M2/02

CPC classification number: H01M10/0563 ,  H01M2/0237 ,  H01M4/13 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0568 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes an electrode assembly, a nonaqueous electrolyte, and a container. The electrode assembly has a positive electrode, a negative electrode, and a separator. The positive electrode contains particles of a lithium transition metal compound as a positive electrode active material. The negative electrode is opposed to the positive electrode. The separator is disposed between the positive electrode and the negative electrode. The nonaqueous electrolyte contains lithium difluorophosphate. The container houses the electrode assembly and the nonaqueous electrolyte. The battery capacity is not less than 21 Ah. The mean particle diameter (D50) of the particles of the lithium transition metal compound is not less than 5 μm and not more than 15 μm. The (D90−D10)/D50 of the particles of the lithium transition metal compound is under 1.1.

Abstract translation: 根据本发明实施方案的非水电解质二次电池包括电极组件，非水电解质和容器。 电极组件具有正极，负极和隔膜。 正极含有作为正极活性物质的锂过渡金属化合物的粒子。 负极与正极相对。 隔板设置在正极和负极之间。 非水电解质含有二氟磷酸锂。 容器容纳电极组件和非水电解质。 电池容量不小于21 Ah。 锂过渡金属化合物的颗粒的平均粒径（D50）不小于5μm且不大于15μm。 锂过渡金属化合物颗粒的（D90-D10）/ D50低于1.1。

公开(公告)号：US09391343B2

公开(公告)日：2016-07-12

申请号：US13962183

申请日：2013-08-08

Applicant: SANYO Electric Co., Ltd.

Inventor： Daisuke Ikeda ,  Keisuke Minami ,  Toyoki Fujihara ,  Toshiyuki Nohma

IPC: H01M4/505 ,  H01M10/0563 ,  H01M2/02 ,  H01M10/052 ,  H01M4/13 ,  H01M4/131 ,  H01M4/525 ,  H01M10/0568

CPC classification number: H01M10/0563 ,  H01M2/0237 ,  H01M4/13 ,  H01M4/131 ,  H01M4/505 ,  H01M4/525 ,  H01M10/052 ,  H01M10/0568 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes an electrode assembly, a nonaqueous electrolyte, and a container. The electrode assembly has a positive electrode, a negative electrode, and a separator. The positive electrode contains particles of a lithium transition metal compound as a positive electrode active material. The negative electrode is opposed to the positive electrode. The separator is disposed between the positive electrode and the negative electrode. The nonaqueous electrolyte contains lithium difluorophosphate. The container houses the electrode assembly and the nonaqueous electrolyte. The battery capacity is not less than 21 Ah. The mean particle diameter (D50) of the particles of the lithium transition metal compound is not less than 5 μm and not more than 15 μm. The (D90−D10)/D50 of the particles of the lithium transition metal compound is under 1.1.

Abstract translation: 根据本发明实施方案的非水电解质二次电池包括电极组件，非水电解质和容器。 电极组件具有正极，负极和隔膜。 正极含有作为正极活性物质的锂过渡金属化合物的粒子。 负极与正极相对。 隔板设置在正极和负极之间。 非水电解质含有二氟磷酸锂。 容器容纳电极组件和非水电解质。 电池容量不小于21 Ah。 锂过渡金属化合物的颗粒的平均粒径（D50）不小于5μm且不大于15μm。 锂过渡金属化合物颗粒的（D90-D10）/ D50低于1.1。

公开(公告)号：US20140045018A1

公开(公告)日：2014-02-13

申请号：US13962028

申请日：2013-08-08

Applicant: SANYO Electric Co., Ltd.

Inventor： Daisuke Ikeda ,  Keisuke Minami ,  Toyoki Fujihara ,  Toshiyuki Nohma

IPC: H01M10/0563

CPC classification number: H01M10/0563 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0587 ,  H01M2010/4292 ,  H01M2220/20

Abstract: A nonaqueous electrolyte secondary battery according to an embodiment of the present invention includes an electrode assembly and a nonaqueous electrolyte. The electrode assembly is formed by winding a positive electrode, a negative electrode, and a separator. The negative electrode is opposed to the positive electrode. The separator is disposed between the positive electrode and the negative electrode. The capacity of the battery is not less than 4 Ah. The number of stacked layers of the positive electrode in a section that includes the center of the nonaqueous electrolyte secondary battery is not less than 50. The positive and negative electrode opposed capacity ratio is 1.1 to 1.4. The nonaqueous electrolyte contains lithium difluorophosphate.

Abstract translation: 根据本发明实施方式的非水电解质二次电池包括电极组件和非水电解质。 电极组件通过卷绕正极，负极和隔膜来形成。 负极与正极相对。 隔板设置在正极和负极之间。 电池容量不小于4 Ah。 包含非水电解质二次电池的中心的部分中的正极堆叠层数不小于50.正负极电容比为1.1〜1.4。 非水电解质含有二氟磷酸锂。

公开(公告)号：US20220140308A1

公开(公告)日：2022-05-05

申请号：US17428391

申请日：2019-11-29

Applicant: SANYO Electric Co., Ltd.

Inventor： Akira Nishida ,  Yoshifumi Magari ,  Atsutoshi Ako ,  Daisuke Ikeda

IPC: H01M4/04 ,  H01M4/525 ,  H01M4/131 ,  H01M4/1391

Abstract: Disclosed is a method for manufacturing a positive electrode plate, wherein even when a positive electrode mix layer is densely compressed, the positive electrode plate is prevented from being so greatly bent that wrinkles created in non-coated regions during transport, winding, or lamination develop into deep winkles or cracks, thus avoiding the inability to transport or wind the positive electrode plate. This manufacturing method can provide a positive electrode plate having a positive electrode mix layer formed on the surface thereof, wherein the filling density of the positive electrode mix layer is at least 3.4 g/cm3, and the warpage amount h of the positive electrode plate in the width direction perpendicular to the longitudinal direction satisfies 0.0≤h≤3.0 mm per 1 m in the longitudinal direction.

公开(公告)号：US20220069359A1

公开(公告)日：2022-03-03

申请号：US17311953

申请日：2019-12-16

Applicant: SANYO Electric Co., Ltd.

Inventor： Tomoyuki Yamada ,  Naoki Imachi ,  Daisuke Ikeda ,  Kazuaki Tamura

IPC: H01M10/0587 ,  H01M50/528 ,  H01M10/04 ,  H01M4/70 ,  H01M10/0585 ,  H01M50/183 ,  H01M50/533 ,  H01M50/103

Abstract: A rectangular secondary battery is provided with: a rectangular exterior body having an opening, a bottom part, a first lateral wall, a second lateral wall, a third lateral wall, and a fourth lateral wall; a sealing plate for sealing the opening; and a flat wound electrode body obtained by winding a positive electrode plate and a negative electrode plate with a separator therebetween, wherein a plurality of the flat wound electrode bodies are arranged in the rectangular exterior body. The flat wound electrode bodies each have: a flat region formed at the center, a first bent region having a bent outer surface and being formed on one end side of the flat region; and a second bent region having a bent outer surface and being formed on the other end side of the flat region.

公开(公告)号：US20220059908A1

公开(公告)日：2022-02-24

申请号：US17299203

申请日：2019-12-16

Applicant: SANYO Electric Co., Ltd.

Inventor： Tomoyuki Yamada ,  Naoki Imachi ,  Daisuke Ikeda ,  Kazuaki Tamura

IPC: H01M50/538 ,  H01M50/533 ,  H01M50/536 ,  H01M50/463 ,  H01M10/04

Abstract: Provided is a secondary battery which can be produced with high efficiency. This secondary battery is provided with: a belt-like positive electrode plate having a plurality of positive electrode tabs; a belt-like negative electrode plate having a plurality of negative electrode tabs; a flat wound electrode body obtained by winding the positive electrode plate and the negative electrode plate with a belt-like separator therebetween; and a positive electrode collector (second positive electrode collector) connected to the plurality of positive electrode tabs. The plurality of positive electrode tabs in a state of being laminated are joined to the positive electrode collector (second positive electrode collector). Identification parts are formed on some positive electrode tabs of the plurality of positive electrode tabs.