公开(公告)号：US20240339734A1

公开(公告)日：2024-10-10

申请号：US18750296

申请日：2024-06-21

Applicant: Ningde Amperex Technology Limited

Inventor： Sen ZHANG ,  ZhiFang DAI ,  Hai LONG ,  Qingwen ZHANG

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

CPC classification number: H01M50/538 ,  H01M10/0431 ,  H01M10/0587

Abstract: 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：US20240322234A1

公开(公告)日：2024-09-26

申请号：US18731804

申请日：2024-06-03

Applicant: Ningde Amperex Technology Limited

Inventor： Jianyu LIU ,  Hai LONG ,  Chao TANG

IPC: H01M10/0566 ,  H01M10/0525

CPC classification number: H01M10/0566 ,  H01M10/0525 ,  H01M2300/0025

Abstract: An electrochemical device includes a positive electrode, a negative electrode, a separator, and an electrolyte solution. The electrolyte solution includes fluoroethylene carbonate and a trinitrile compound. Based on a mass of the electrolyte solution, a mass percent of the fluoroethylene carbonate is A %, satisfying: 4≤ A≤10, and a mass percent of the trinitrile compound is B %, satisfying: 1≤B≤3. A positive active material of a positive electrode includes a metal element M. The metal element M includes at least one of Ti, Mg, or Al. A content of the metal element M in the positive active material is C ppm. C and B satisfy: 7≤C×B/1000≤27.

公开(公告)号：US20240194952A1

公开(公告)日：2024-06-13

申请号：US18411755

申请日：2024-01-12

Applicant: Ningde Amperex Technology Limited

Inventor： Weiyuan ZHOU ,  Hai LONG ,  Zhifang DAI ,  Qingwen ZHANG

IPC: H01M10/0587 ,  H01M4/04 ,  H01M10/0525

CPC classification number: H01M10/0587 ,  H01M4/0404 ,  H01M10/0525

Abstract: An electrochemical apparatus includes a battery cell formed by a first electrode plate, a separator, and a second electrode plate through winding, where the first electrode plate includes a current collector, a tab, and an active substance layer. The current collector includes a first surface facing toward the interior of the battery cell and a second surface facing away from the interior of the battery cell; the tab is electrically connected to the current collector and extends out of the current collector; and the active substance layer is provided on the first surface and the second surface of the current collector. A winding start end of the first electrode plate is provided as a single-sided zone, an insulating coating is provided on the first surface of the current collector located in the single-sided zone, and the active substance layer is provided on the second surface.

公开(公告)号：US20240136597A1

公开(公告)日：2024-04-25

申请号：US18394636

申请日：2023-12-22

Applicant: Ningde Amperex Technology Limited

Inventor： Zhifang DAI ,  Hai LONG

IPC: H01M10/0587 ,  H01M10/0525 ,  H01M50/105 ,  H01M50/538

CPC classification number: H01M10/0587 ,  H01M10/0525 ,  H01M50/105 ,  H01M50/538

Abstract: A winding-type lithium ion battery includes an electrode assembly; the electrode assembly includes a first electrode plate, a separator, and a second electrode plate that are successively stacked and wound; the first electrode plate includes a first current collector and multiple first tabs electrically connected to the first current collector; the second electrode plate includes a second current collector and multiple second tabs electrically connected to the second current collector; the electrode assembly is flat, and a notch S is provided at least one corner of the electrode assembly.

公开(公告)号：US20230116555A1

公开(公告)日：2023-04-13

申请号：US17990109

申请日：2022-11-18

Applicant: Ningde Amperex Technology Limited

Inventor： Pan WANG ,  Zhifang DAI ,  Huijun LIU ,  Hai LONG

IPC: H01M10/0587 ,  H01M50/531

Abstract: A battery cell, including a first electrode plate and a second electrode plate. The first electrode plate includes a first current collector and a first active layer, the first electrode plate includes a first end portion, the first end portion is arranged on an outer side of the battery cell, and the first active layer is arranged on a surface of the first current collector in the first end portion. The first electrode plate and the second electrode plate are spaced apart and wound, and an electrode plate at the outermost circle of the battery cell is the first electrode plate. A first end face, and a first cambered zone connected to the first end face are defined. The first end portion is disposed in the first cambered zone. Also, a battery and electronic apparatus using the battery cell.

公开(公告)号：US20240355996A1

公开(公告)日：2024-10-24

申请号：US18763155

申请日：2024-07-03

Applicant: Ningde Amperex Technology Limited

Inventor： Zhenghuang CAI ,  Hai LONG ,  Qiang ZHENG

IPC: H01M4/04 ,  H01M4/66 ,  H01M4/70 ,  H01M10/04 ,  H01M50/46 ,  H01M50/533 ,  H01M50/538

CPC classification number: H01M4/0404 ,  H01M4/66 ,  H01M4/70 ,  H01M10/0431 ,  H01M50/46 ,  H01M50/533 ,  H01M50/538

Abstract: An electrode sheet has a first end and a second end opposite each other, and includes a current collector, active materials disposed on a first coated zone and a second coated zone, and a plurality of electrode tabs. The current collector includes a side edge, opposing first and second surfaces. The first surface includes a first coated zone and a first uncoated zone, and the second surface includes a second coated zone. At the first end, the first coated zone and the second coated zone are flush. At the second end, the first coated zone is misaligned with the second coated zone. The sum of the length of the first coated zone and the length of the first uncoated zone is equal to the length of the second coated zone. Each electrode tab is coupled to the current collector and protrudes beyond the side edge.

公开(公告)号：US20220123313A1

公开(公告)日：2022-04-21

申请号：US17281383

申请日：2020-05-20

Applicant: Ningde Amperex Technology Limited

Inventor： Pan WANG ,  Tingling LEI ,  Hai LONG ,  Huijun LIU

IPC: H01M4/62 ,  H01M10/0587

Abstract: A battery cell includes a first electrode plate, a second electrode plate, and an insulating adhesive. The first electrode plate includes a first current collector, a first coating, and a first active layer, the first coating is disposed between the first current collector and the first active layer and includes a thermal expansion material. The first electrode plate and the second electrode plate are wound at intervals, the first electrode plate is the outermost electrode plate of the battery cell and further includes a first end which is a winding ending end, a surface of the first current collector at the first end facing toward the center of the battery cell is provided with the first active layer. The insulating adhesive includes a first sub-insulating adhesive disposed on a surface of the first current collector on the outermost side of the battery cell facing away from the first active layer.

公开(公告)号：US20220037638A1

公开(公告)日：2022-02-03

申请号：US17281379

申请日：2019-07-09

Applicant: Ningde Amperex Technology Limited

Inventor： Zhenghuang CAI ,  Hai LONG

IPC: H01M4/13 ,  H01M10/0587 ,  H01M50/538

Abstract: A cathode plate including a first winding end and a second winding end along a length direction. The cathode plate further includes a cathode current collector and a first cathode active layer. The first cathode active layer is arranged at a surface of the cathode current collector, and the first cathode active layer includes a first end portion located at the first winding end, and the first end portion has a first cutout or a first barrier layer provided at a margin area. This application further provides an electrode assembly including the cathode plate.

公开(公告)号：US20200313148A1

公开(公告)日：2020-10-01

申请号：US16828742

申请日：2020-03-24

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Zhenghuang CAI ,  Hai LONG ,  Qiang ZHENG

IPC: H01M2/26 ,  H01M2/16 ,  H01M4/70 ,  H01M4/04 ,  H01M4/66 ,  H01M10/04

Abstract: An electrode sheet has a first end and a second end opposite each other, and includes a current collector, active materials disposed on a first coated zone and a second coated zone, and a plurality of electrode tabs. The current collector includes a side edge, opposing first and second surfaces. The first surface includes a first coated zone and a first uncoated zone, and the second surface includes a second coated zone. At the first end, the first coated zone and the second coated zone are flush. At the second end, the first coated zone is misaligned with the second coated zone. The sum of the length of the first coated zone and the length of the first uncoated zone is equal to the length of the second coated zone. Each electrode tab is coupled to the current collector and protrudes beyond the side edge.