专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

US20240332752A1 TABLESS BATTERY 审中-公开
公开(公告)号：US20240332752A1
公开(公告)日：2024-10-03
申请号：US18620698
申请日：2024-03-28
申请人： Murata Manufacturing Co., Ltd.
发明人： Akira SHINKAWA , Akira OTANI , Masashi TAKAHASHI , Yasuaki HARA
IPC分类号： H01M50/538 , H01M10/04 , H01M50/107 , H01M50/474 , H01M50/533
CPC分类号： H01M50/538 , H01M10/0431 , H01M50/107 , H01M50/474 , H01M50/533
摘要： An electrode wound body includes positive and negative electrodes, and a separator between the positive electrode and the negative electrode. The positive electrode includes a positive foil extension extending from a positive electrode foil. The negative electrode includes a negative foil extension extending from a negative electrode foil. The positive electrode, the negative electrode, and the separator are wound to define a spiral including a through hole with a central axis extending through the through hole. The positive foil extension and the negative foil extension extend from opposite ends of the electrode wound body. Portions of the positive foil extension include bends that bend towards the central axis so that the portions of the positive foil extension overlap to define a first surface. Portions of the negative foil extension include bends that bend towards the central axis so that the portions of the negative foil extension overlap to define a second surface.

2. 发明公开

US20230344093A1 SECONDARY BATTERY, ELECTRONIC EQUIPMENT, AND ELECTRIC TOOL 审中-公开
公开(公告)号：US20230344093A1
公开(公告)日：2023-10-26
申请号：US18216158
申请日：2023-06-29
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Yasuaki HARA
IPC分类号： H01M50/536 , H01M10/04
CPC分类号： H01M50/536 , H01M10/0431 , H01M2220/30
摘要： A secondary battery improves current collection efficiency. A positive electrode current collector plate and a negative electrode current collector plate each include weld groups that are provided radially. A positive electrode active material uncovered part includes a first weld that is nearest to a winding termination end of a positive electrode foil, and a second weld that is second nearest to the winding termination end of the positive electrode foil after the first weld. A negative electrode active material uncovered part includes a third weld that is nearest to a winding termination end of a negative electrode foil, and a fourth weld that is second nearest to the winding termination end of the negative electrode foil after the third weld. The secondary battery satisfies Expressions (1) and (2) below:

0≤LC1≤LC2 (1)

0≤LA1≤LA2 (2)

where LC1 represents a distance from the winding termination end of the positive electrode foil to the first weld in millimeters, LC2 represents a distance from the first weld to the second weld in millimeters, LA1 represents a distance from the winding termination end of the negative electrode foil to the third weld in millimeters, and LA2 represents a distance from the third weld to the fourth weld in millimeters.

3. 发明申请

US20220336862A1 SECONDARY BATTERY, ELECTRONIC DEVICE, AND ELECTRIC TOOL 有权
公开(公告)号：US20220336862A1
公开(公告)日：2022-10-20
申请号：US17842003
申请日：2022-06-16
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Yasuaki HARA
IPC分类号： H01M10/0587 , H01M50/531
摘要： Provided is a secondary battery. The secondary battery includes a positive electrode includes a first covered part covered with a positive electrode active material layer and a positive electrode active material non-covered part on a positive electrode foil, and a negative electrode includes a second covered part covered with a negative electrode active material layer and a negative electrode active material non-covered part on a negative electrode foil, an electrode wound body includes: a flat surface formed by bending each of the positive electrode active material non-covered part and the negative electrode active material non-covered part toward the central axis of the electrode wound body to have an overlap with each other; and a groove formed in the flat surface.

4. 发明申请

US20220123372A1 SECONDARY BATTERY, BATTERY PACK, ELECTRONIC DEVICE, ELECTRIC TOOL, ELECTRIC AIRCRAFT, AND ELECTRIC VEHICLE 有权
公开(公告)号：US20220123372A1
公开(公告)日：2022-04-21
申请号：US17565066
申请日：2021-12-29
申请人： MURATA MANUFACTURING CO., LTD.
发明人： Yasuaki HARA
IPC分类号： H01M10/0587 , H01M50/536 , H01M10/0525
摘要： Provided is a secondary battery, where a positive electrode includes a first covered part covered with a positive electrode active material layer and a positive electrode active material non-covered part on a positive electrode foil, and a negative electrode includes a second covered part covered with a negative electrode active material layer and a negative electrode active material non-covered part on a negative electrode foil, the positive electrode active material non-covered part is joined to the positive electrode current-collecting plate at one end of an electrode wound body, the negative electrode active material non-covered part is joined to the negative electrode current-collecting plate at the other end of the electrode wound body.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式