公开(公告)号：US20250062504A1

公开(公告)日：2025-02-20

申请号：US18637285

申请日：2024-04-16

Applicant: Samsung SDI Co., Ltd.

Inventor： Hyung Dong LEE ,  Jae Hyung KIM ,  Seung Il KIM

IPC: H01M50/538 ,  H01M10/04 ,  H01M10/647

Abstract: An electrode assembly for a battery includes: a positive electrode plate including a positive electrode current collector plate, a positive electrode active material layer on a surface of the plate, at least one uncoated portion at which no positive electrode active material is applied, and at least one positive electrode tab electrically attached and coupled to the uncoated portion, and protruding upwardly from an upper portion of the electrode assembly; a negative electrode plate including a negative electrode current collector plate, a negative electrode active material layer on a surface of the plate, at least one uncoated portion in which no negative electrode active material is applied, at least one negative electrode tab electrically attached and coupled to the uncoated portion, and protruding downwardly from a lower portion of the electrode assembly; and a separator between the positive electrode plate and the negative electrode plate.

公开(公告)号：US20250038373A1

公开(公告)日：2025-01-30

申请号：US18715385

申请日：2022-11-30

Applicant: LG ENERGY SOLUTION, LTD.

Inventor： Hae Jin LIM

IPC: H01M50/538 ,  B60L50/64 ,  H01M10/0587 ,  H01M50/107 ,  H01M50/152 ,  H01M50/169

Abstract: An electrode assembly includes an electrode stack having a first electrode, a first separation layer, a second electrode and a second separation layer consecutively stacked, the electrode stack being wound around a winding axis in a winding direction, and a first electrode tab electrically connected to the first electrode, the first electrode tab protruding in an axial direction away from a first end of the first electrode. The second electrode includes a second electrode uncoated portion where an active material is not coated, the second uncoated portion being exposed at a second end of the second electrode in the axial direction, the second uncoated portion being configured to be a second electrode tab. A battery cell including the electrode assembly is also provided.

公开(公告)号：US20250025957A1

公开(公告)日：2025-01-23

申请号：US18789074

申请日：2024-07-30

Applicant: LG Energy Solution, Ltd.

Inventor： Tae Gon Kim ,  Seung Yeop Seo ,  Seong Kyun Shin ,  Nam Kyu Lee ,  Ha Neuol Choi

IPC: B23K20/10 ,  H01M4/02 ,  H01M50/536 ,  H01M50/538

Abstract: An apparatus for welding a secondary battery electrode assembly is disclosed. The electrode assembly may have negative electrodes alternatingly interleaved with positive electrodes. The apparatus may be configured to weld a plurality of non-coated electrode tabs using a sonotrode horn, each of the tabs extending from a respective one of the electrodes having a first same polarity. The sonotrode horn may include a vibration-applying plate and a horn pattern region having a protrusion-type unit pitch pattern disposed on the vibration-applying plate. A radius of curvature of a side surface of the protrusion-type unit pitch pattern disposed at an outer edge of the horn pattern region may be directly proportional to a number of the non-coated electrode tabs. A tip sharpness of the protrusion-type unit pitch pattern disposed at an outer edge of the horn pattern region may be inversely proportional to a number of the non-coated electrode tabs.

公开(公告)号：US12206137B2

公开(公告)日：2025-01-21

申请号：US17519262

申请日：2021-11-04

Applicant: Prime Planet Energy & Solutions, Inc.

Inventor： Tomoyuki Yamada ,  Takashi Hosokawa ,  Ryoichi Wakimoto

IPC: H01M50/538 ,  H01M10/04 ,  H01M50/186 ,  H01M50/446 ,  H01M50/547

Abstract: Disclosed here is a battery including: an exterior body having a bottom wall; and a winding electrode body in which positive electrode, negative electrode and separator are wound about a winding axis. The winding electrode body has a flat shape having a pair of curvature parts having a curved outside surface and a flat part that connects the pair of curvature parts to each other and has a flat outside surface. When a line perpendicular to the winding axis of the winding electrode body and perpendicular to the bottom wall of the exterior body is assumed as L1, a portion positioned at an outermost periphery of the negative electrode in at least one of the pair of the curvature parts faces a portion positioned on a winding inner peripheral side of the negative electrode via the separator and not via the positive electrode on the line L1.

公开(公告)号：US20250023205A1

公开(公告)日：2025-01-16

申请号：US18768575

申请日：2024-07-10

Applicant: Ningde Amperex Technology Limited

Inventor： Liujun HUANG

IPC: H01M50/538 ,  H01M10/04 ,  H01M50/105 ,  H01M50/178

Abstract: An electrochemical device includes a housing, an electrode assembly, a first tab, a second tab, and a third tab. The first tab and the second tab are connected to the first electrode plate. A protruding part of the second tab out of the housing is connected to a protruding part of the first tab out of the housing. Along a first direction, a projection of the protruding part of the first tab out of the housing overlaps a projection of the protruding part of the second tab out of the housing. By starting from a first leading end, the first tab is connected to the first electrode plate at a 10% to 60% point of a total length of the first electrode plate, and the second tab is connected to the first electrode plate at a 60% to 100% point of the total length of the first electrode plate.

公开(公告)号：US20250023204A1

公开(公告)日：2025-01-16

申请号：US18682092

申请日：2022-09-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KIYOMI KOZUKI ,  SHINICHI SAKAMOTO ,  SHINYA GESHI

IPC: H01M50/538 ,  H01M10/04 ,  H01M50/107

Abstract: A power storage device includes a first electrode having a first current collector, a second electrode having a second current collector, and a separator interposed between the first electrode and the second electrode. The first electrode, the second electrode, and the separator constitute a wound body having a columnar shape. The power storage device further includes a case having a cylindrical bottomed shape for accommodating the wound body, and a current collection plate electrically connected to the first electrode and the case. The first electrode has an overlapping region overlapping the current collection plate when viewed from a case axial direction and a non-overlapping region not overlapping the current collection plate when viewed from the axial direction. The first electrode and the current collection plate are electrically connected to each other in the overlapping region. The first current collector is provided in at least a part of the non-overlapping region, and has a contact part in contact with the case bottom.

公开(公告)号：US20250007114A1

公开(公告)日：2025-01-02

申请号：US18636843

申请日：2024-04-16

Applicant: Samsung SDI Co., Ltd.

Inventor： Gwan Hyeon YU ,  Hyun Ki JUNG ,  Myung Seob KIM ,  Mun Sung KIM ,  Dong Sub LEE ,  Yoon Sun YOO ,  Woo Tae JUN

IPC: H01M50/533 ,  H01M10/04 ,  H01M50/107 ,  H01M50/342 ,  H01M50/474 ,  H01M50/538 ,  H01M50/567

Abstract: A secondary battery includes a case having a cylindrical shape, an electrode assembly accommodated in the case and including first tabs protruding in a first direction and second tabs protruding in the first direction, a first current collector plate accommodated in the case and connected to the first tabs, a second current collector plate configured to connect the second tabs to the case, a rivet terminal connected to the first current collector plate and passing through the case, and an insulating member in contact with a perimeter of each of the electrode assembly, the first current collector plate, and the second current collector plate.

公开(公告)号：USRE50254E1

公开(公告)日：2024-12-31

申请号：US17398678

申请日：2021-08-10

Applicant: LG Chem, Ltd.

Inventor： Su-Han Park ,  Min-Suk Kang ,  In-Jung Kim ,  Han Kim ,  Yong-Tae Lee

IPC: H01M50/54 ,  H01M10/04 ,  H01M10/0525 ,  H01M10/0583 ,  H01M10/0585 ,  H01M10/0587 ,  H01M50/46 ,  H01M50/538

Abstract: Disclosed is an electrode assembly in which a plurality of electrode plates are stacked so that a separator is interposed between a positive electrode plate and a negative electrode plate, wherein each of the electrode plates includes an electrode tab protruding outwards at one side thereof for coupling with an electrode lead, wherein at least one electrode plate of the positive electrode plate and the negative electrode plate extends relatively longer than the separator at one end of the electrode plate where the electrode tab is located to form the electrode plate extension protruding out of the separator, and wherein the electrode plate extensions of the same polarity are coupled to each other.

公开(公告)号：US20240429511A1

公开(公告)日：2024-12-26

申请号：US18825495

申请日：2024-09-05

Applicant: Zhuhai CosMX Battery Co., Ltd.

Inventor： Ning PENG ,  Bin XIE ,  Yongwang WANG

IPC: H01M50/216 ,  H01M50/181 ,  H01M50/184 ,  H01M50/186 ,  H01M50/193 ,  H01M50/538

Abstract: Embodiments of the present invention provide a housing assembly of button cell, a button cell and an electronic product. The housing assembly of button cell includes: a housing and a conductive part, the housing having a holding cavity that is capable of holding a cell of the button cell, the cell having a first tab and a second tab, the housing being provided with a through hole, the conductive part being positioned at and blocking the through hole, and the conductive part and the through hole being sealed and insulated; where, the number of the conductive part is one or two, and when the number of the conductive part is two, the housing is provided with two through holes, where the conductive parts correspond to the through holes one by one. It is beneficial to improving sealability of the housing assembly of button cell.

公开(公告)号：US20240429504A1

公开(公告)日：2024-12-26

申请号：US18821233

申请日：2024-08-30

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED

Inventor： Yuyong LEI ,  Zhijun GUO ,  Peng WANG

IPC: H01M50/15 ,  H01M10/04 ,  H01M50/176 ,  H01M50/249 ,  H01M50/533 ,  H01M50/538 ,  H01M50/593

Abstract: A battery cell includes a housing, a first end cover assembly, a second end cover assembly and an electrode assembly. Openings are provided on ends of the housing opposite to each other. The first end cover assembly and the second end cover assembly are configured to respectively cover two openings of the housing. The electrode assembly includes a body part, a first tab and a second tab. The first tab extends from a first end face of the body part facing the first end cover assembly and is configured to be connected with the first end cover assembly. The second tab extends from a second end face of the body part facing the second end cover assembly and is configured to be connected with the second end cover assembly.