公开(公告)号：US20240356043A1

公开(公告)日：2024-10-24

申请号：US18693359

申请日：2022-09-21

申请人： GS Yuasa International Ltd.

发明人： Yuya ITAMI ,  Hideto WATANABE ,  Hiromasa MURAMATSU ,  Heisuke NISHIKAWA

IPC分类号： H01M4/62 ,  H01G11/26 ,  H01G11/30 ,  H01G11/52 ,  H01G11/74 ,  H01G11/86 ,  H01M4/02 ,  H01M4/134 ,  H01M10/0587

CPC分类号： H01M4/628 ,  H01G11/26 ,  H01G11/30 ,  H01G11/52 ,  H01G11/74 ,  H01G11/86 ,  H01M4/134 ,  H01M10/0587 ,  H01M2004/027

摘要： An energy storage device according to one aspect of the present invention includes: an electrode assembly including a positive electrode, a negative electrode, and a separator; and a nonaqueous electrolyte, in which the negative electrode includes: a negative substrate; a first layer disposed directly or indirectly on the separator side of the negative substrate and containing a metal of gold, platinum, or a combination thereof; and a second layer disposed on the separator side of the first layer, containing a polymer having lithium ion conductivity and a lithium salt, and capable of regulating passage of the nonaqueous electrolyte, and the negative electrode further includes a lithium metal layer disposed between the negative substrate and the first layer.

公开(公告)号：US20240347781A1

公开(公告)日：2024-10-17

申请号：US18294103

申请日：2022-11-04

申请人： LG ENERGY SOLUTION, LTD.

发明人： In Kee HAN ,  Joo Hwan SUNG ,  Cheon Hee BOK ,  Joonghoon LEE ,  Minkook MOON ,  Eun Young KIM

IPC分类号： H01M10/42 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/586 ,  H01M50/59

CPC分类号： H01M10/4235 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/586 ,  H01M50/59

摘要： An electrode assembly for a secondary battery includes a stacked body including a sheet-like positive electrode, a sheet-like negative electrode, and a sheet-like separator interposed between the sheet-like positive electrode and the sheet-like negative electrode, the sheet-like positive electrode, the sheet-like negative electrode, and the sheet-like separator being wound; and a nonwoven fabric having a porous structure, the nonwoven fabric being located closer to a winding starting end of the electrode assembly than the sheet-like positive electrode in a region including a portion corresponding to one end of the sheet-like positive electrode.

公开(公告)号：US20240339734A1

公开(公告)日：2024-10-10

申请号：US18750296

申请日：2024-06-21

申请人： Ningde Amperex Technology Limited

发明人： Sen ZHANG ,  ZhiFang DAI ,  Hai LONG ,  Qingwen ZHANG

IPC分类号： H01M50/538 ,  H01M10/04 ,  H01M10/0587

CPC分类号： H01M50/538 ,  H01M10/0431 ,  H01M10/0587

摘要： An electrochemical device includes an electrode assembly. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator. A plurality of first tabs are disposed on the first electrode plate. The separator is disposed between the first and second electrode plates. The first electrode plate, the separator, and the second electrode plate are stacked and wound. The first tabs are connected to a region of the first electrode plate other than first inner layers and first outer layers. The first inner layers include N layers along a direction from a start layer to an end layer of the first electrode plate. The first outer layers include M layers starting from the end layer of the first electrode plate along a direction from the end layer to the start layer of the first electrode plate, where M≥1, and N≥3.

公开(公告)号：US20240339668A1

公开(公告)日：2024-10-10

申请号：US18746454

申请日：2024-06-18

申请人： ZHUHAI COSMX BATTERY CO., LTD.

发明人： Baohai ZHANG ,  Chong PENG ,  Junyi LI

IPC分类号： H01M10/0587 ,  C09J9/00 ,  H01M4/02 ,  H01M4/13 ,  H01M10/0525 ,  H01M50/531

CPC分类号： H01M10/0587 ,  C09J9/00 ,  H01M4/13 ,  H01M10/0525 ,  H01M50/531 ,  H01M2004/027 ,  H01M2004/028

摘要： A winding battery includes a positive electrode plate and a negative electrode plate which are formed by winding, the positive electrode plate includes a positive electrode current collector and a first coating layer, and the negative electrode plate includes a negative electrode current collector and a negative electrode active layer. The first coating layer includes a first insulating adhesive layer and a positive electrode active layer, the positive electrode active layer is disposed on a surface of the positive electrode current collector, the first insulating adhesive layer is connected to the positive electrode active layer, and at least one cross section of the first insulating adhesive layer and an end surface, close to a winding start point, of the negative electrode active layer are located in a same plane.

公开(公告)号：US20240322304A1

公开(公告)日：2024-09-26

申请号：US18736117

申请日：2024-06-06

申请人： Zhuhai CosMX Battery Co., Ltd.

发明人： Hui ZHANG ,  Ning PENG

IPC分类号： H01M50/109 ,  H01M10/0587 ,  H01M50/119 ,  H01M50/153 ,  H01M50/184

CPC分类号： H01M50/109 ,  H01M10/0587 ,  H01M50/119 ,  H01M50/153 ,  H01M50/184

摘要： The present disclosure provides a battery and an electronic device, which relate to the technical field of batteries and are used for solving the technical problem of poor sealing performance of batteries. The battery includes a shell, a cover assembly and a coiled core assembly located inside the shell; the shell is provided with an opening, and the cover assembly sealingly covers the opening; the cover assembly includes a conductive member, a top cover and a sealing member between the conductive member and the top cover; the conductive member electrically contacts the coiled core assembly; the sealing member is provided with a first through hole, the top cover is provided with a second through hole, and a diameter of the first through hole is smaller than that of the second through hole.

公开(公告)号：US20240313204A1

公开(公告)日：2024-09-19

申请号：US18675152

申请日：2024-05-28

申请人： CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

发明人： Chengfeng Li ,  Longfei Yang ,  Xiaomei Liu

IPC分类号： H01M4/38 ,  H01M4/02 ,  H01M4/04 ,  H01M4/36 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0587 ,  H01M50/249

CPC分类号： H01M4/386 ,  H01M4/0416 ,  H01M4/366 ,  H01M10/0525 ,  H01M10/0568 ,  H01M10/0569 ,  H01M10/0587 ,  H01M50/249 ,  H01M2004/027 ,  H01M2300/0042

摘要： Provided are a secondary battery and a preparation method thereof, and an electric device. The secondary battery includes a negative electrode plate and an electrolyte. The negative electrode plate includes a negative active material and a lithium supplement agent, and an insulating material is dissolved in the electrolyte. A mass ratio of the insulating material in the electrolyte ranges from 0.1% to 4%. The insulating material is derived from the negative electrode plate prior to injection the electrolyte, and the insulating material is arranged between the negative active material and the lithium supplement agent in the negative electrode plate prior to the injection the electrolyte.

公开(公告)号：US12087915B2

公开(公告)日：2024-09-10

申请号：US18116186

申请日：2023-03-01

申请人： Apple Inc.

发明人： Christopher R. Pasma ,  YooEup Hyung ,  Brian K. Shiu ,  Stephen J. Wisler

IPC分类号： H01M10/0587 ,  H01M4/02 ,  H01M4/36 ,  H01M50/116 ,  H01M50/119 ,  H01M50/166 ,  H01M50/171 ,  H01M50/531 ,  H01M50/533 ,  H01M50/56

CPC分类号： H01M10/0587 ,  H01M4/36 ,  H01M50/116 ,  H01M50/166 ,  H01M50/171 ,  H01M50/531 ,  H01M50/533 ,  H01M50/56 ,  H01M2004/028 ,  H01M50/119 ,  H01M2220/30

摘要： Energy storage devices, battery cells, and batteries of the present technology may include a housing characterized by a first end and a second end opposite the first end. The batteries may include a set of electrodes located within the housing. The set of electrodes may be positioned within the interior region of the housing. The set of electrodes may include a first electrode and a second electrode. The first electrode may include a tab coupled with a surface of the housing at a distal end and coupled with the first electrode at a proximal end. The tab may be coupled with a first surface of the first electrode. A first insulating material may be applied along a second surface of the first electrode across a section corresponding to a location where the tab is coupled with the first electrode. The batteries may also include a cap at least partially contained within the interior region of the housing. The cap may be characterized by a first surface facing the set of electrodes.

公开(公告)号：US12080855B2

公开(公告)日：2024-09-03

申请号：US17286683

申请日：2019-11-25

申请人： SANYO Electric Co., Ltd.

发明人： Takafumi Hosokawa ,  Takashi Hosokawa ,  Kyohei Kobayashi ,  Shuji Ogawa

IPC分类号： H01M10/0587 ,  H01M10/0525 ,  H01M50/46 ,  H01M50/463 ,  H01M50/489 ,  H01M50/409

CPC分类号： H01M10/0587 ,  H01M10/0525 ,  H01M50/46 ,  H01M50/463 ,  H01M50/489 ,  H01M50/409

摘要： A decrease in energy density of a battery is suppressed, and the occurrence of internal short circuit between a positive plate and a negative plate located at the innermost circumference of a curved portion of a flat electrode assembly, where the curvature of the curved portion is greatest, is suppressed. In a nonaqueous electrolyte secondary battery including a flat wound electrode assembly (14), the electrode assembly (14) has a pair of curved portions (20A, 20B) located at either end and a flat portion (21) located between the pair of curved portions. In at least one of the curved portions, at least two layers of a second electrode plate are disposed on an inner side of a curved portion of a first electrode plate located at an innermost circumference.

公开(公告)号：US20240283066A1

公开(公告)日：2024-08-22

申请号：US18432056

申请日：2024-02-05

申请人： Prime Planet Energy & Solutions, Inc.

发明人： Yozo UCHIDA ,  Yusuke ITOH

IPC分类号： H01M50/184 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/103 ,  H01M50/186 ,  H01M50/609

CPC分类号： H01M50/184 ,  H01M10/0525 ,  H01M10/0587 ,  H01M50/103 ,  H01M50/186 ,  H01M50/609

摘要： Provided is a technique for improving impregnation efficiency of an electrolyte solution into a wound electrode body. A method for manufacturing an electricity storage device is disclosed herein. The electricity storage device includes an electrode body, a case, and an electrolyte solution. The case includes a body having a wide rectangular first wall and an opening opposed to the first wall, and a sealing plate that seals the opening and is opposed to the first wall. This method includes an accommodating step, an injecting step, and a sealing step. In the accommodating step, the electrode body is accommodated in the body to make the wide surfaces opposed to the first wall. In the injecting step, the electrolyte solution is injected into the body after the accommodating step. In the sealing step, the opening of the body is sealed with the sealing plate after the injecting step.

公开(公告)号：US20240274889A1

公开(公告)日：2024-08-15

申请号：US18644427

申请日：2024-04-24

申请人： MURATA MANUFACTURING CO., LTD.

发明人： Yuichiro SUGAUCHI ,  Yoshinori WAKUI

IPC分类号： H01M10/0587 ,  H01M4/02 ,  H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M50/107 ,  H01M50/247 ,  H01M50/249 ,  H01M50/417 ,  H01M50/449

CPC分类号： H01M10/0587 ,  H01M4/364 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M10/0525 ,  H01M50/107 ,  H01M50/247 ,  H01M50/249 ,  H01M50/417 ,  H01M50/449 ,  H01M2004/027 ,  H01M2004/028

摘要： A secondary battery includes an electrode wound body, a positive electrode current collector plate, a negative electrode current collector plate, an electrolytic solution, and a battery can. The electrode wound body includes a positive electrode and a negative electrode. The positive electrode includes a positive electrode current collector, and a positive electrode active material layer covering the positive electrode current collector. The electrolytic solution includes an impregnation electrolytic solution with which the electrode wound body is impregnated, and a non-impregnation electrolytic solution with which the electrode wound body is not impregnated. The non-impregnation electrolytic solution includes a dinitrile compound. A ratio of a weight of the dinitrile compound included in the non-impregnation electrolytic solution to a total area of the positive electrode active material layer covering the positive electrode current collector is within a range from 2.00 μg/cm2 to 25.00 μg/cm2 both inclusive.