公开(公告)号：US11901575B2

公开(公告)日：2024-02-13

申请号：US18465172

申请日：2023-09-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tingzhen Xie ,  Shaocong Ouyang ,  Chenghua Fu ,  Baoyun Xu ,  Yunmei Lin

IPC: H01M50/267 ,  H01M50/209 ,  H01M50/233 ,  H01M4/131 ,  H01M4/134 ,  H01M4/02

CPC classification number: H01M50/267 ,  H01M4/131 ,  H01M4/134 ,  H01M50/209 ,  H01M50/233 ,  H01M2004/028 ,  H01M2200/105 ,  H01M2220/20

Abstract: Provided are a battery pack and a power consuming device. The battery pack includes a battery pack case and a plurality of battery cells accommodated in the battery pack case. An inner space of the battery pack case may be divided into a first region located at the center and a second region enclosing the first region. The plurality of battery cells include: at least one first battery cell disposed in the first region; and at least one second battery cell disposed in the second region. An internal resistance of the first battery cell and an internal resistance of the second battery cell increase with the decrease of a temperature.

公开(公告)号：US11929499B2

公开(公告)日：2024-03-12

申请号：US17864483

申请日：2022-07-14

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Shaocong Ouyang ,  Chenghua Fu ,  Tingzhen Xie ,  Bo Wang

IPC: H01M4/50 ,  H01M4/04 ,  H01M4/505 ,  H01M4/52 ,  H01M4/525 ,  H01M10/05 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/505 ,  H01M4/043 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/021 ,  H01M2004/028

Abstract: A lithium manganate positive electrode active material, comprising a lithium manganate matrix and a cladding layer as a “barrier layer” and a “functional layer” are described. The cladding layer can not only “prevent” the transition metal ions which have been produced by the lithium manganate matrix from directly “running” into the electrolyte solution, but also “prevent” the hydrofluoric acid in the electrolyte solution from directly contacting with the lithium manganate substrate, and then prevent the lithium manganate matrix from dissolving out more transition metal manganese ions; as a “functional layer”, the cladding layer contains various effective ingredients inside, which can reduce the transition metal manganese ions already present inside the battery through chemical reactions or adsorption effects, thus slowing down the generation of transition metal manganese and the decomposition of the SEI film (solid electrolyte interphase film) catalyzed by the transition metal manganese.

公开(公告)号：US20230006202A1

公开(公告)日：2023-01-05

申请号：US17821819

申请日：2022-08-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Shaocong Ouyang ,  Chenghua Fu ,  Tingzhen Xie ,  Dong Pan ,  Yonghuang Ye

IPC: H01M4/505 ,  H01M4/04 ,  H01M10/0525

Abstract: The present disclosure provides a lithium manganate positive electrode active material, comprising a lithium manganate matrix and a cladding layer, where the cladding layer comprises an organic bonding material, one or more A-type salts, and one or more B-type salts. The lithium manganate positive electrode active material of the present disclosure significantly reduces the content of transition metal manganese ions within a battery through combined action of the organic bonding material, the A-type salts, and the B-type salts, thereby slowing down the decomposition and consumption of the SEI film (solid electrolyte interphase) by transition metal manganese, and improving the capacity retention rate and impedance performance of the battery.

公开(公告)号：US12021232B2

公开(公告)日：2024-06-25

申请号：US17821819

申请日：2022-08-24

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Shaocong Ouyang ,  Chenghua Fu ,  Tingzhen Xie ,  Dong Pan ,  Yonghuang Ye

IPC: H01M4/505 ,  H01M4/04 ,  H01M10/0525 ,  H01M4/02

CPC classification number: H01M4/505 ,  H01M4/0416 ,  H01M10/0525 ,  H01M2004/028

Abstract: The present disclosure provides a lithium manganate positive electrode active material, comprising a lithium manganate matrix and a cladding layer, where the cladding layer comprises an organic bonding material, one or more A-type salts, and one or more B-type salts. The lithium manganate positive electrode active material of the present disclosure significantly reduces the content of transition metal manganese ions within a battery through combined action of the organic bonding material, the A-type salts, and the B-type salts, thereby slowing down the decomposition and consumption of the SEI film (solid electrolyte interphase) by transition metal manganese, and improving the capacity retention rate and impedance performance of the battery.

公开(公告)号：US20230127767A1

公开(公告)日：2023-04-27

申请号：US18087713

申请日：2022-12-22

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tingzhen Xie ,  Shaocong Ouyang ,  Chenghua Fu ,  Bo Wang ,  Yonghuang Ye

IPC: H01M50/446 ,  H01M10/0525 ,  H01M50/457

Abstract: This application relates to a separator with an organic-inorganic hybrid layer. By comprehensively adjusting an adaptive collocation relationship between the median diameter of the first inorganic particles and the median diameter of the second inorganic particles, and by controlling reasonable collocation between the microscale particles and the nanoscale particles, this application develops a separator that is capable of significantly reducing transition metal ions in an electrolytic solution and that is highly ion-permeable, thereby significantly improving the cycle performance and storage performance of lithium-ion batteries.

公开(公告)号：US12002960B2

公开(公告)日：2024-06-04

申请号：US18383542

申请日：2023-10-25

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chang Zhu ,  Shaocong Ouyang ,  Baoyun Xu ,  Tingzhen Xie

IPC: H01M4/62 ,  H01M50/204 ,  H01M50/267 ,  H01M4/02

CPC classification number: H01M4/62 ,  H01M50/204 ,  H01M50/267 ,  H01M2004/028

Abstract: A battery pack and an electric device including the battery pack. The battery pack includes a battery pack container and first, second and third battery cells accommodated in different regions of the battery pack container, the first, second and third battery cells each has a first and a second discharge voltage plateau, an average discharge voltage of the first discharge voltage plateau is higher than an average discharge voltage of the second discharge voltage plateau, and the first, second and third battery cells have different proportions of the discharge capacity corresponding to the second discharge voltage plateau.

公开(公告)号：US20230420785A1

公开(公告)日：2023-12-28

申请号：US18465172

申请日：2023-09-12

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Tingzhen Xie ,  Shaocong Ouyang ,  Chenghua Fu ,  Baoyun Xu ,  Yunmei Lin

IPC: H01M50/267 ,  H01M50/209 ,  H01M50/233 ,  H01M4/134 ,  H01M4/131

CPC classification number: H01M50/267 ,  H01M50/209 ,  H01M50/233 ,  H01M4/134 ,  H01M4/131 ,  H01M2220/20 ,  H01M2200/105 ,  H01M2004/028

Abstract: Provided are a battery pack and a power consuming device. The battery pack includes a battery pack case and a plurality of battery cells accommodated in the battery pack case. An inner space of the battery pack case may be divided into a first region located at the center and a second region enclosing the first region. The plurality of battery cells include: at least one first battery cell disposed in the first region; and at least one second battery cell disposed in the second region. An internal resistance of the first battery cell and an internal resistance of the second battery cell increase with the decrease of a temperature.