公开(公告)号：US20240021839A1

公开(公告)日：2024-01-18

申请号：US18472211

申请日：2023-09-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Changsheng He ,  Mingjian Liu ,  Keqiang Li ,  Xiaosong Liu ,  Bin Xie ,  Zhiyang Wu

IPC: H01M4/66 ,  H01M10/04

CPC classification number: H01M4/667 ,  H01M10/0431 ,  H01M10/0409 ,  H01M2004/021

Abstract: Provided are an electrode assembly, a battery cell, a battery, and an electrical device. The electrode assembly includes first electrode plates and a second electrode plate that are of opposite polarities. The second electrode plate and two first electrode plates are stacked and wound to form the electrode assembly. The second electrode plate is located between the two first electrode plates. Each of the first electrode plates includes a first composite current collector and a first active material layer. The first active material layer is disposed on a surface that is of the first composite current collector and that is oriented back from the second electrode plate. The first composite current collector is configured to dielectrically isolate the first active material layer from the second electrode plate and allow passage of ions transmitted between the first active material layer and the second electrode plate.

公开(公告)号：US11978910B2

公开(公告)日：2024-05-07

申请号：US18472211

申请日：2023-09-21

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Changsheng He ,  Mingjian Liu ,  Keqiang Li ,  Xiaosong Liu ,  Bin Xie ,  Zhiyang Wu

IPC: H01M4/66 ,  H01M4/02 ,  H01M10/04

CPC classification number: H01M4/667 ,  H01M10/0409 ,  H01M10/0431 ,  H01M2004/021 ,  H01M2220/20

Abstract: Provided are an electrode assembly, a battery cell, a battery, and an electrical device. The electrode assembly includes first electrode plates and a second electrode plate that are of opposite polarities. The second electrode plate and two first electrode plates are stacked and wound to form the electrode assembly. The second electrode plate is located between the two first electrode plates. Each of the first electrode plates includes a first composite current collector and a first active material layer. The first active material layer is disposed on a surface that is of the first composite current collector and that is oriented back from the second electrode plate. The first composite current collector is configured to dielectrically isolate the first active material layer from the second electrode plate and allow passage of ions transmitted between the first active material layer and the second electrode plate.

公开(公告)号：US20230387518A1

公开(公告)日：2023-11-30

申请号：US18446290

申请日：2023-08-08

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Zhisheng Chai ,  Changsheng He ,  Haizu Jin

IPC: H01M50/124 ,  H01M50/538 ,  H01M50/536 ,  H01M50/117 ,  H01M10/04 ,  H01M50/107 ,  H01M50/179

CPC classification number: H01M50/1243 ,  H01M50/538 ,  H01M50/536 ,  H01M2220/20 ,  H01M10/0431 ,  H01M50/107 ,  H01M50/179 ,  H01M50/117

Abstract: An electrode plate, a battery cell, a battery and an electrical device are provided. The electrode plate includes an insulating substrate, a conductive layer, and an active material layer. The conductive layer is arranged on the surface of the insulating substrate. The active material layer is applied on the surface of the conductive layer away from the insulating substrate. The conductive layer includes a first part coated with the active material layer and a second part not coated with the active material layer. The first part and the second part are arranged along the first direction. The conductive layer has a resistivity of ρ1, a specific heat capacity of C, a density of ρ2, and a constant K=ρ1/(C·ρ2). The conductive layer has a thickness of d1, the first part has a size of W along the first direction, and d1, W and K satisfy: 0.001 J/(Ω·mm4·° C.)≤d1/(K·W)≤0.0075 J/(Ω·mm4·° C.).