公开(公告)号：US20240047638A1

公开(公告)日：2024-02-08

申请号：US18363524

申请日：2023-08-01

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhyon LEE ,  Yeonhee YOON

IPC: H01M4/04 ,  H01F7/02 ,  H01M4/139

CPC classification number: H01M4/0404 ,  H01F7/0294 ,  H01M4/139 ,  H01M2004/027

Abstract: A magnet assembly for orientation according to an embodiment of the present disclosure includes a metal plate, a lower layer attached to the metal plate and including a plurality of permanent magnets that form a matrix, and an upper layer on the lower layer and including a plurality of permanent magnets that form a same matrix as the matrix, wherein a ratio of a length of one of the plurality of permanent magnets with respect to a sum of thicknesses of the lower layer and the upper layer is 3:1 to 1:2.

公开(公告)号：US20190355972A1

公开(公告)日：2019-11-21

申请号：US16461529

申请日：2017-11-28

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sangjun LEE ,  Bokhyun KA ,  Kyeuyoon SHEEM ,  Jinhyon LEE ,  Donghyuk CHANG

IPC: H01M4/133 ,  H01M10/04 ,  H01M4/131 ,  H01M4/587 ,  H01M10/0587

Abstract: An exemplary embodiment of the present invention provides a spiral-wound electrode assembly including: a negative electrode and a positive electrode, each of which is configured to include a substrate, and a first composite material and a second composite material formed on opposite surfaces of the substrate; and a separator disposed between the negative electrode and the anode, wherein the first composite material of the negative electrode is disposed farther away from a center of the electrode assembly than the second composite material of the negative electrode, and the first composite material of the negative electrode is oriented with respect to a first surface of the substrate of the negative electrode.

公开(公告)号：US20190305356A1

公开(公告)日：2019-10-03

申请号：US16465869

申请日：2017-12-08

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Donghyuk CHANG ,  Bokhyun KA ,  Kyeuyoon SHEEM ,  Jinhyon LEE

IPC: H01M10/04 ,  H02J7/00

Abstract: A rechargeable battery that minimizes a current amount difference between a double-sided coated region and a single-sided coated region by increasing resistance of the single-sided coated region to be higher than that of the double-sided coated region in an electrode plate (e.g., a negative electrode plate). A rechargeable battery including: an electrode assembly including an electrode plate at opposite sides of a separator and spirally winding the separator and the electrode plates; and a pouch to accommodate the electrode assembly therein and to draw out an electrode tab connected to the electrode plates to the outside thereof. The electrode plate includes: a double-sided coated region having an active material on opposite sides of a substrate and a single-sided coated region having an active material on a single surface of the substrate, wherein resistance of the single-sided coated region is higher than that of the double-sided coated region.

公开(公告)号：US20240372096A1

公开(公告)日：2024-11-07

申请号：US18770459

申请日：2024-07-11

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhyon LEE ,  Hongjeong KIM ,  Hyeri EOM ,  Sangjun LEE ,  Daeseop LIM

IPC: H01M4/583 ,  H01M4/02 ,  H01M4/133 ,  H01M4/36 ,  H01M10/0525

Abstract: The present invention relates an anode for a lithium secondary battery and a lithium secondary battery comprising same. The anode for a lithium secondary battery comprises a current collector; and an anode active material layer formed on the current collector and including a carbon-based anode active material, wherein the anode active material layer has a multi-layer structure of three or more layers and at least one layer of the anode active material layer is an oriented layer having a degree of divergence (DD) of 19 or greater, thee DD being defined by the following Equation 1: Degree ⁢ of ⁢ Divergence ⁢ ( DD ) = ( I a / I total ) * 100 Equation ⁢ 1 In Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuKα ray, and, Itotal is a sum of peak intensities at all angles measured by XRD using a CuKα ray.

公开(公告)号：US20230006189A1

公开(公告)日：2023-01-05

申请号：US17943307

申请日：2022-09-13

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Sangjun LEE ,  Bokhyun KA ,  Kyeuyoon SHEEM ,  Jinhyon LEE ,  Donghyuk CHANG

IPC: H01M4/133 ,  H01M10/0587 ,  H01M4/587 ,  H01M4/131 ,  H01M10/04 ,  H01M4/02

Abstract: An exemplary embodiment of the present invention provides a spiral-wound electrode assembly including: a negative electrode and a positive electrode, each of which is configured to include a substrate, and a first composite material and a second composite material formed on opposite surfaces of the substrate; and a separator disposed between the negative electrode and the anode, wherein the first composite material of the negative electrode is disposed farther away from a center of the electrode assembly than the second composite material of the negative electrode, and the first composite material of the negative electrode is oriented with respect to a first surface of the substrate of the negative electrode.

公开(公告)号：US20190326598A1

公开(公告)日：2019-10-24

申请号：US16382331

申请日：2019-04-12

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhyon LEE ,  Bokhyun KA ,  Kyeuyoon SHEEM ,  Soon Ho AHN

IPC: H01M4/587 ,  H01M10/0525

Abstract: A negative electrode and a rechargeable lithium battery, the negative electrode including a current collector; and a negative active material layer on the current collector, the negative active material including a carbon negative active material; wherein: an electrode density of the negative electrode is in the range of about 1.0 g/cc to about 1.5 g/cc, and a DD (Degree of Divergence) value as defined by the following Equation 1 is about 24 or greater, DD (Degree of Divergence)=(Ia/Itotal)*100  [Equation 1] wherein, in Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuKα ray, and Itotal is a sum of peak intensities at all angles measured by XRD using a CuKα ray.

公开(公告)号：US20180151867A1

公开(公告)日：2018-05-31

申请号：US15824271

申请日：2017-11-28

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Daeseop LIM ,  Hyejin KWON ,  Bokhyun KA ,  Ji-hoon SON ,  Kyeuyoon SHEEM ,  Jinhyon LEE

IPC: H01M4/133 ,  H01M2/18

CPC classification number: H01M4/133 ,  C01B32/20 ,  H01M2/18 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/1393 ,  H01M4/364 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2004/027

Abstract: An electrode assembly including a separator between a positive electrode and a negative electrode. Each of the positive electrode and the negative electrode includes a base member and an active material layer at at least one side of the base member. The active material layer of the negative electrode includes an alternating arrangement of orientation portions and non-orientation portions. Each of the orientation portions is oriented to have a constant angle with respect to one side of the negative electrode.

公开(公告)号：US20240413341A1

公开(公告)日：2024-12-12

申请号：US18655673

申请日：2024-05-06

Applicant: SAMSUNG SDI CO., LTD. ,  Industry-University Cooperation Foundation Hanyang University

Inventor： Jinhyon LEE ,  Ungyu PAIK ,  Taeseup SONG ,  Hyungjun LEE ,  Jiwoon KIM

IPC: H01M4/62 ,  H01M4/02 ,  H01M4/131 ,  H01M4/525

Abstract: Provided are an electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same. The electrode includes a current collector; and an electrode active material layer on the current collector and including an active material, a first conductive material, and a binder, wherein the first conductive material includes a core including graphene, graphene oxide, reduced graphene oxide, or a combination thereof; and a coating layer on a surface of the core and including alumina nanoparticles.

公开(公告)号：US20240363861A1

公开(公告)日：2024-10-31

申请号：US18766782

申请日：2024-07-09

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinhyon LEE ,  Hongjeong KIM ,  Hyeri EOM ,  Sangjun LEE ,  Daeseop LIM

IPC: H01M4/583 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M10/052

CPC classification number: H01M4/583 ,  H01M4/0404 ,  H01M4/366 ,  H01M10/052 ,  H01M2004/021 ,  H01M2004/027

Abstract: A negative electrode for a lithium secondary battery, the negative electrode includes a current collector; and a negative electrode active material layer including a first layer on both sides of the current collector and comprising a first carbon negative electrode active material, and a second layer on the first layer and comprising a second carbon negative electrode active material, wherein a DD (Degree of Divergence) value of the first layer is 30% to 90% of a DD value of the negative electrode active material layer and, the DD value is defined by Equation 1:








DD
⁡
(

Degree
⁢

of
⁢

Divergence

)

=


(


I
a

/

I
total


)

*
1
⁢
0
⁢
0





[

Equation
⁢

1


]







In Equation 1, Ia is a sum of peak intensities at non-planar angles measured by XRD using a CuKα ray, and Itotal is a sum of peak intensities at all angles measured by XRD using a CuKα ray

公开(公告)号：US20230387450A1

公开(公告)日：2023-11-30

申请号：US18231046

申请日：2023-08-07

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Donghyuk CHANG ,  Bokhyun KA ,  Kyeuyoon SHEEM ,  Jinhyon LEE

IPC: H01M10/04 ,  H02J7/00 ,  H01M4/13 ,  H01M10/42

CPC classification number: H01M10/0459 ,  H01M10/0431 ,  H01M10/42 ,  H01M10/04 ,  H01M4/13 ,  H02J7/0045

Abstract: An electrode assembly, including an electrode plate at opposite sides of a separator, the electrode plate including a double-sided coated region having an active material on opposite sides of a substrate forming a current collector, and a single-sided coated region having an active material on a single surface of the substrate, wherein the single-sided coated region has a resistance that is higher than a resistance of the double-sided coated region.