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1.发明公开公开(公告)号：US20240304809A1
公开(公告)日：2024-09-12
申请号：US18664815
申请日：2024-05-15
Applicant: Ningde Amperex Technology Limited
IPC: H01M4/583 , H01M4/02 , H01M4/04 , H01M4/1393 , H01M4/1395 , H01M4/38 , H01M4/62
CPC classification number: H01M4/583 , H01M4/0404 , H01M4/0471 , H01M4/1393 , H01M4/1395 , H01M4/386 , H01M4/622 , H01M4/625 , H01M2004/021 , H01M2004/027
Abstract: A negative electrode plate and an electrochemical apparatus and electronic device including the same. A temperature corresponding to a peak height of the first peak on a DTG curve of the negative electrode plate is higher than 350° C.; and the negative electrode plate includes a negative electrode active material layer, the negative electrode active material layer includes a negative electrode active material, and an active specific surface area of the negative electrode material layer is greater than or equal to K·25 cm2/g, where K represents a correction parameter, K=15 m/Dv50, and Dv50 represents a median particle size of the negative electrode active material.
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公开(公告)号：US20230231405A1
公开(公告)日：2023-07-20
申请号：US18192228
申请日：2023-03-29
Applicant: Ningde Amperex Technology Limited
CPC classification number: H02J7/007182 , H02J7/0013 , H02J7/0047 , H01M10/441
Abstract: A charging method for battery includes: in an n-th charging process, charging a first battery to a charge cut-off voltage Un in a first charging manner; after the n-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVn of the first battery at a standing time of ti; in an m-th charging process, charging the first battery to the charge cut-off voltage Un in the first charging manner; after the m-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVm of the first battery at the standing time of ti; and under the condition of OCVn>OCVm, in an (m+1)-th charging process and subsequent charging processes, charging the first battery to the charge cut-off voltage Un in the first charging manner and then continuing to charge the first battery to a first voltage Um+1 in a second charging manner.
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公开(公告)号：US20230231144A1
公开(公告)日：2023-07-20
申请号：US18175824
申请日：2023-02-28
Applicant: Ningde Amperex Technology Limited
IPC: H01M4/66 , H01M10/0525 , H01M4/583 , H01M4/62
CPC classification number: H01M4/667 , H01M4/583 , H01M4/623 , H01M10/0525
Abstract: An electrode plate includes: a current collector, including, in a width direction, a first edge region, a second edge region, and a middle region located between the first edge region and the second edge region; a first coating layer, including a first portion and a second portion disposed on the first edge region and the second edge region respectively; and a second coating layer. A part of the second coating layer is disposed on the middle region, another part of the second coating layer is disposed on the first coating layer. The second coating layer includes an active material. A first bonding force between the first portion and the first edge region and a second bonding force between the second portion and the second edge region are both greater than a third bonding force between the second coating layer and the middle region.
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Patent Agency Ranking
公开(公告)号：US20230261200A1
公开(公告)日：2023-08-17
申请号：US18193742
申请日：2023-03-31
Applicant: Ningde Amperex Technology Limited
Abstract: An electrochemical apparatus includes a positive electrode plate. The positive electrode plate includes a positive electrode current collector, a positive electrode active material layer, and a positive electrode coating layer. The positive electrode current collector includes a first zone, a second zone, and a third zone. The positive electrode active material layer includes a first portion, a second portion, and a third portion that are disposed in the first zone, the second zone, and the third zone, respectively. The positive electrode coating layer includes a fourth portion and a fifth portion that are disposed in the first zone and the second zone, respectively. Combined impedance of the first portion and the fourth portion is greater than impedance of the third portion, and combined impedance of the second portion and the fifth portion is greater than the impedance of the third portion.
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公开(公告)号：US20230238821A1
公开(公告)日：2023-07-27
申请号：US18192069
申请日：2023-03-29
Applicant: Ningde Amperex Technology Limited
IPC: H02J7/00
CPC classification number: H02J7/007182 , H02J7/0013 , H02J7/0047
Abstract: A charging method for battery includes: in an n-th charging process, charging a first battery to a charge cut-off voltage Un in a charging manner; after the n-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVn, of the first battery at a standing time of ti; in an m-th charging process, charging the first battery to the charge cut-off voltage Un in the charging manner, where m>n; after the m-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVm of the first battery at the standing time of ti; and under the condition of OCVn>OCVm, in an (m+1)-th charging process and subsequent charging processes, charging the first battery to a first charge cut-off voltage Um+1 in the charging manner, where Um+1=Un+k×(OCVn−OCVm), and 0
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公开(公告)号：US20230238822A1
公开(公告)日：2023-07-27
申请号：US18192963
申请日：2023-03-30
Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED
Inventor： Ting GUAN , Shan ZHU , Zhiru YANG , Fei WU
IPC: H02J7/00
CPC classification number: H02J7/007182 , H02J7/0013
Abstract: A charging method for battery. In an n-th charging process, charging a first battery to a charge cut-off voltage Un in a first charging manner, where n is a positive integer; after the n-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVn of the first battery at a standing time of ti; in an m-th charging process, charging the first battery to the charge cut-off voltage Un in the first charging manner, where m is a positive integer, and m>n; after the m-th charging process is completed, leaving the first battery standing, and obtaining an open-circuit voltage OCVm of the first battery at the standing time of ti; and under the condition of OCVn>OCVm, continuing to charge the first battery standing in a second charging manner to a first voltage U′m, where U′m=Un+k×(OCVn−OCVm), and 0
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公开(公告)号：US20220407081A1
公开(公告)日：2022-12-22
申请号：US17845555
申请日：2022-06-21
Applicant: Ningde Amperex Technology Limited
IPC: H01M4/66 , H01M10/0525 , H01M4/62
Abstract: An electrochemical apparatus includes an electrode plate including a current collector, a first coating layer, and a second coating layer. The first coating layer is provided between the current collector and the second coating layer. The second coating layer includes a first active material. R2*d/D
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公开(公告)号：US20210391742A1
公开(公告)日：2021-12-16
申请号：US17281355
申请日：2019-10-21
Applicant: Ningde Amperex Technology Limited
Abstract: A method of charging a battery, including: in an mth charge and discharge cycle, constant-current charging a battery to a first cut-off voltage Um at a charging current, where m is any two or more integers of 1, 2, 3, . . . , x, and Um has different values in at least two charge and discharge cycles. The method shortens fully charged time of a battery and further ensure that phenomena of lithium precipitation and overcharge do not occur on the battery, thereby prolonging a service life of the battery.
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