公开(公告)号：US20240039033A1

公开(公告)日：2024-02-01

申请号：US18484615

申请日：2023-10-11

Applicant: Ningde Amperex Technology Limited

Inventor： Xiang LI ,  Huixin WANG ,  Qiaoshu HU ,  Yibo ZHANG

IPC: H01M10/04 ,  H01M50/538 ,  H01M50/534 ,  H01M50/536

CPC classification number: H01M10/0431 ,  H01M50/538 ,  H01M50/534 ,  H01M50/536

Abstract: A battery cell includes an electrode sheet. The electrode sheet includes an electrode sheet body and a plurality of tabs connected to the electrode sheet body. The width of each of the plurality of tabs is different from one another; or the length of each of the plurality of tabs is different from one another. The electrode sheet and the battery cell having the electrode sheet ensures that each of the tabs in the electrode sheet can electrically conduct well with the tab lead. Thus, the battery cell has the advantage of good electrical conductivity.

公开(公告)号：US20230238665A1

公开(公告)日：2023-07-27

申请号：US18191926

申请日：2023-03-29

Applicant: Ningde Amperex Technology Limited

Inventor： Qiuyan WENG ,  Yibo ZHANG ,  Hongmei WEI

IPC: H01M50/538 ,  H01M50/446

CPC classification number: H01M50/538 ,  H01M50/446

Abstract: An electrochemical apparatus includes an electrode assembly. The electrode assembly includes a first electrode plate, a first separation layer, a second electrode plate, and a second separation layer. Along a first direction, the first separation layer includes a first protruding portion extending beyond the second electrode plate, and the second separation layer includes a second protruding portion extending beyond the second electrode plate. The first protruding portion includes a first bonding area, the second protruding portion includes a second bonding area, and adhesion between the first bonding area and the second bonding area is F1, where F1≥5 N/m. Separation layers on two sides of an electrode plate are bonded to prevent the separation layers from shrinking at high temperatures or prevent the separation layers from turning inward at edges due to impact from an electrolyte when the electrochemical apparatus falls, thereby preventing a short circuit.

公开(公告)号：US20230134298A1

公开(公告)日：2023-05-04

申请号：US18148774

申请日：2022-12-30

Applicant: Ningde Amperex Technology Limited

Inventor： Yibo ZHANG

IPC: H01M4/04 ,  H01M4/133 ,  H01M4/134

Abstract: A bipolar current collector includes a porous substrate, a first metal, and a second metal. The first metal exists on one surface of the porous substrate. The second metal exists on another surface of the porous substrate. At least one of the first metal or the second metal exists inside the porous substrate. The porous substrate possesses advantages of oxidation resistance, reduction resistance, and ion insulation, and some mechanical strength. A metal layer of the bipolar current collector possesses advantages of high electron conductivity and ion insulativity, high mechanical strength, and high thermal stability. In addition, both surfaces of the bipolar current collector are rough to some extent, thereby optimizing interfacial bonding of positive and negative films on both sides to a composite bipolar current collector, and increasing the bonding force of the film.

公开(公告)号：US20210242535A1

公开(公告)日：2021-08-05

申请号：US16967617

申请日：2020-03-27

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Yibo ZHANG ,  Xiang LI ,  Bin WANG ,  Ying SHAO

IPC: H01M50/44 ,  H01M50/431 ,  H01M50/449 ,  H01M50/46 ,  H01M50/414 ,  H01M10/0525

Abstract: The present application relates to an electrochemical device. The electrochemical device includes: at least one electrode, the at least one electrode having a first surface; and a fiber coating layer, the fiber coating layer including a fiber and being disposed on the first surface. The electrochemical device has the advantages of high energy density, strong liquid retention ability, good drop resistance, good chemical stability and the like since its fiber coating layer has small thickness, high porosity and stronger interfacial adhesion to the electrode.