公开(公告)号：US20200313176A1

公开(公告)日：2020-10-01

申请号：US16534326

申请日：2019-08-07

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Huixin WANG ,  Silin HUANG ,  Sheng CHENG ,  Hongming YU

IPC: H01M4/38 ,  H01M4/133 ,  H01M10/0525

Abstract: The present application relates to an electrode and an electrochemical device including the electrode. The electrode includes a first region and a second region, wherein the electrode includes a substrate and an electrode active material coated on at least one surface of the substrate, and wherein the charge/discharge thickness difference of the electrode in the first region is ΔD1, and the charge/discharge thickness difference of the electrode in the second region is ΔD2, wherein ΔD1 is less than ΔD2. When the electrode of the present application is applied to the electrochemical device, the formation of lithium dendrites can be effectively reduced, and the safety of the electrochemical device can be improved.

公开(公告)号：US20200373546A1

公开(公告)日：2020-11-26

申请号：US16718852

申请日：2019-12-18

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

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

IPC: H01M2/26 ,  H01M10/04

Abstract: The embodiments of the present application relate to an electrode sheet and a battery cell including the same. The electrode sheet according to an embodiment comprises 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 provided in the embodiments of the present application ensure that each of the tabs in the electrode sheet can electrically conduct well with the tab lead. Thus, the battery cell provided in the present application has the advantage of good electrical conductivity.

公开(公告)号：US20200313186A1

公开(公告)日：2020-10-01

申请号：US16534191

申请日：2019-08-07

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Huixin WANG ,  Silin HUANG ,  Sheng CHENG ,  Hongming YU

IPC: H01M4/587 ,  H01M4/525 ,  H01M4/36 ,  H01M4/62 ,  H01M4/38

Abstract: The present application relates to an electrode and an electrochemical device including the electrode. An anode of the present application includes a first anode region and a second anode region, wherein a direct current resistance value RA2 of the second anode region is less than or equal to 98% of a direct current resistance value RA1 of the first anode region. A cathode of the present application includes a first cathode region and a second cathode region, wherein a direct current resistance value RC2 of the second cathode region is greater than a direct current resistance value RC1 of the first cathode region. When the anode and/or the cathode of the present application are/is applied to the electrochemical device, it can effectively reduce the formation of lithium dendrites, thereby improving the safety of the electrochemical device.

公开(公告)号：US20240274899A1

公开(公告)日：2024-08-15

申请号：US18647169

申请日：2024-04-26

Applicant: Dongguan Poweramp Technology Limited ,  Ningde Amperex Technology Limited

Inventor： Yarui CHENG ,  Huixin WANG ,  Xiao JIE ,  Guoda HE

IPC: H01M10/42 ,  H01M10/0525 ,  H02J7/00

CPC classification number: H01M10/4285 ,  H01M10/0525 ,  H01M10/425 ,  H02J7/0048 ,  H02J7/005 ,  H01M2010/4271

Abstract: An electrochemical apparatus management method includes: performing a first charge-discharge cycle on an electrochemical apparatus at a charge current; at a first moment after the first charge-discharge cycle, obtaining an SOH1; in response to the SOH1 satisfying a preset condition, performing an intermittent charge operation on the electrochemical apparatus at a first detection current, obtaining data in the intermittent charge operation, determining a current lithium precipitation SOC1 based on the data; in response to the SOC1 being higher than a first SOC threshold, performing a second charge-discharge cycle on the electrochemical apparatus at the charge current, in response to the SOC1 being lower than or equal to the first SOC threshold and higher than or equal to a second SOC threshold, controlling the electrochemical apparatus to perform a risk control operation, or in response to the SOC1 being lower than the second SOC threshold, controlling the electrochemical apparatus to stop.

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：US20240128525A1

公开(公告)日：2024-04-18

申请号：US18394406

申请日：2023-12-22

Applicant: Ningde Amperex Technology Limited

Inventor： Qi SUN ,  Huixin WANG ,  Ying WANG

IPC: H01M10/44 ,  H01M10/052 ,  H02J7/00

CPC classification number: H01M10/445 ,  H01M10/052 ,  H01M10/448 ,  H02J7/007182 ,  H02J7/007188

Abstract: A management method of an electrochemical device, includes: when the electrochemical device is in a preset state, measuring a predetermined parameter of the electrochemical device, and in response to the predetermined parameter meeting a preset condition, performing at least one discharge-charge operation on the electrochemical device. The discharge-charge operation includes: discharging the electrochemical device to a second voltage threshold, and charging the electrochemical device to a third voltage threshold. The second voltage threshold is less than a first voltage threshold, the first voltage threshold is a limited charge voltage of the electrochemical device, and a difference between the third voltage threshold and the first voltage threshold is not greater than 20%.