公开(公告)号：US20240195013A1

公开(公告)日：2024-06-13

申请号：US18553501

申请日：2022-03-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Daisuke FURUSAWA ,  Tomohiko YOKOYAMA

IPC: H01M50/451 ,  H01M10/04 ,  H01M50/414 ,  H01M50/431 ,  H01M50/46 ,  H01M50/466 ,  H01M50/489

CPC classification number: H01M50/451 ,  H01M10/0422 ,  H01M50/414 ,  H01M50/431 ,  H01M50/46 ,  H01M50/466 ,  H01M50/489

Abstract: The disclosed separator is a separator of a belt shape having first and second long sides. The separator includes a substrate, an inorganic filler layer laminated on the substrate and containing an inorganic filler as a major component, and a resin layer laminated on part of the inorganic filler layer and containing a resin as a major component. At least part of the resin layer is formed in a first region of a belt shape and a second region of a belt shape. The first and second regions extend adjacent to the first and second long sides, respectively. A portion where the resin layer is not formed is present in a third region between the first region and the second region.

公开(公告)号：US20170005306A1

公开(公告)日：2017-01-05

申请号：US15268093

申请日：2016-09-16

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomohiko YOKOYAMA ,  Yoshiyuki MURAOKA ,  Takahiro FUKUOKA ,  Kyosuke MIYATA

IPC: H01M2/12 ,  H01M10/0587 ,  H01M2/08 ,  H01M2/26 ,  H01M10/04 ,  H01M10/0525

CPC classification number: H01M2/12 ,  H01M2/08 ,  H01M2/1241 ,  H01M2/1264 ,  H01M2/263 ,  H01M4/525 ,  H01M10/0422 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/028 ,  Y02T10/7011

Abstract: A cylindrical lithium ion battery in which an electrode group formed by winding a positive electrode and a negative electrode is housed in a battery case is disclosed. A sealing plate seals an opening of the battery case. An insulating plate having a plurality of openings is provided on a side of the electrode group closer to the sealing plate. The plurality of openings include a first hole with a largest opening area, and a plurality of second holes with opening areas smaller than the opening area of the first hole. An opening ratio of the first hole is 12% or more and 40% or less; a sum of opening ratios of the second holes is 0.3% or more and 10% or less; and a total opening ratio of all the openings is 20% or more and 50% or less.

Abstract translation: 公开了一种圆筒形锂离子电池，其中通过卷绕正极和负极形成的电极组被容纳在电池壳体中。 密封板密封电池盒的开口。 具有多个开口的绝缘板设置在电极组的靠近密封板的一侧。 多个开口包括具有最大开口面积的第一孔和多个具有小于第一孔的开口面积的开口面积的第二孔。 第一孔的开口率为12％以上且40％以下; 第二孔的开口率的总和为0.3％以上且10％以下; 所有开口的总开口率为20％以上且50％以下。

公开(公告)号：US20180301677A1

公开(公告)日：2018-10-18

申请号：US16013229

申请日：2018-06-20

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tomohiko YOKOYAMA ,  Yoshiyuki MURAOKA ,  Takahiro FUKUOKA ,  Kyosuke MIYATA

IPC: H01M2/12 ,  H01M10/04 ,  H01M10/0587 ,  H01M10/0525 ,  H01M2/08 ,  H01M2/26 ,  H01M4/525 ,  H01M4/02

CPC classification number: H01M2/12 ,  H01M2/08 ,  H01M2/1241 ,  H01M2/1264 ,  H01M2/263 ,  H01M4/525 ,  H01M10/0422 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/028 ,  Y02T10/7011

Abstract: A cylindrical lithium ion battery in which an electrode group formed by winding a positive electrode and a negative electrode is housed in a battery case is disclosed. A sealing plate seals an opening of the battery case. An insulating plate having a plurality of openings is provided on a side of the electrode group closer to the sealing plate. The plurality of openings include a first hole with a largest opening area, and a plurality of second holes with opening areas smaller than the opening area of the first hole. An opening ratio of the first hole is 12% or more and 40% or less; a sum of opening ratios of the second holes is 0.3% or more and 10% or less; and a total opening ratio of all the openings is 20% or more and 50% or less.