公开(公告)号：US20220223948A1

公开(公告)日：2022-07-14

申请号：US17709545

申请日：2022-03-31

Applicant: Ningde Amperex Technology Limited

Inventor： Kun Yan ,  Yu Ding ,  Yibo Zhang ,  Qiaoshu Hu

IPC: H01M50/141 ,  H01M50/126 ,  H01M10/0587 ,  H01M50/122

Abstract: An electrochemical apparatus includes a barrier, where the barrier is hermetically connected to an outer package, standalone chambers are formed at two sides of the barrier respectively, each chamber encapsulates an electrode assembly and an electrolyte, electrode assemblies in adjacent chambers are connected in series by tabs, and the barrier includes an ion insulating layer, water permeability of the barrier is less than or equal to 10−3 g/(day·m2·Pa)/3 mm, and sealing thickness T and sealing width W of a seal between the barrier and the outer package satisfy 0.01≤T/W≤0.05. Based on the electrochemical apparatus, not only high voltage output can be achieved and a temperature rise of the electrochemical apparatus can be reduced, but also water resistance and environmental stability of the electrochemical apparatus can be improved.

公开(公告)号：US11817543B2

公开(公告)日：2023-11-14

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: H01M50/538 ,  H01M50/54 ,  H01M50/541 ,  H01M50/533 ,  H01M50/531 ,  H01M50/526 ,  H01M10/04 ,  H01M50/534 ,  H01M50/536

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

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：US11342554B2

公开(公告)日：2022-05-24

申请号：US16676668

申请日：2019-11-07

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Bin Wang ,  Qian Wen ,  Yibo Zhang ,  Qiaoshu Hu

IPC: H01M4/36 ,  H01M4/38 ,  H01M4/587 ,  H01M4/60 ,  H01M10/0525 ,  H01M4/02

Abstract: The present application relates to an anode, and an electrochemical device and an electronic device comprising the same. Embodiments of the present application provided an anode comprising: a current collector, a first anode structure layer and a second anode structure layer. The first anode structure layer comprises a first framework material and the second anode structure layer comprises a second framework material, wherein the first anode structure layer is disposed between the current collector and the second anode structure layer, and the first framework material has a higher oxidation-reduction potential for lithium ion or electronic conductivity than the second framework material. When the anode with double-layer structure provided by the present application is charged, the space utilization ratio of the anode can be enhanced, the rate capability of the electrochemical device can be enhanced, the formation of lithium dendrites may be inhibited, and the volume change amount of the anode can be reduced, thereby enhancing the safety performance and cycle performance of the electrochemical device.

公开(公告)号：US11211594B2

公开(公告)日：2021-12-28

申请号：US16669131

申请日：2019-10-30

Applicant: NINGDE AMPEREX TECHNOLOGY LIMITED

Inventor： Yibo Zhang ,  Xiang Li ,  Bin Wang ,  Qiaoshu Hu

IPC: H01M4/04 ,  H01M4/131 ,  H01M4/136 ,  H01M4/1393 ,  H01M4/1397 ,  H01M4/36 ,  H01M4/66 ,  H01M4/62 ,  H01M10/052 ,  H01M4/13 ,  H01M10/0585

Abstract: The present application relates to a composite current collector, and a composite electrode and an electrochemical device comprising the same. The composite current collector of the present application comprises an intermediate layer, a first metal layer, a second metal layer, and a through hole. The intermediate layer has a first surface and a second surface opposite to the first surface, the first metal layer is disposed on the first surface, and the second metal layer is disposed on the second surface. The through hole penetrates through the intermediate layer, the first metal layer and the second metal layer, wherein the through hole is filled with an electrically insulated ionic conductor.

公开(公告)号：US12237542B2

公开(公告)日：2025-02-25

申请号：US17710131

申请日：2022-03-31

Applicant: Ningde Amperex Technology Limited

Inventor： Nan Zhang ,  Yibo Zhang ,  Kun Yan ,  Qiaoshu Hu

IPC: H01M50/529 ,  H01M50/112 ,  H01M50/172 ,  H01M50/186 ,  H01M50/193 ,  H01M50/483 ,  H01M50/486 ,  H01M50/533 ,  H01M50/538 ,  H01M50/54

Abstract: An electrochemical device includes a first electrode assembly, a second electrode assembly, and a packaging shell. The first electrode assembly and the second electrode assembly B are each located in a separate cavity in the packaging shell. Two opposite-polarity tabs of the first electrode assembly and the second electrode assembly are connected in the packaging shell. The connected two opposite-polarity tabs comprise a first tab extending out of the packaging shell. Such design of extending the tabs and the design of ion insulation between the hermetic cavities improve the charge and discharge performance and the product quality of the electrochemical device.

公开(公告)号：US20230125965A1

公开(公告)日：2023-04-27

申请号：US18088874

申请日：2022-12-27

Applicant: Ningde Amperex Technology Limited

Inventor： Yibo Zhang ,  Qiaoshu Hu ,  Nan Zhang ,  Kun Yan

IPC: H01M50/593 ,  H01M50/529 ,  H01M4/62

Abstract: A partition plate includes a partition substrate, a positive electrode membrane, a negative electrode membrane, and an insulation layer. The positive electrode membrane and the negative electrode membrane are respectively located on two surfaces of the partition substrate. The insulation layer is disposed on the partition substrate and the insulation layer is disposed at a periphery of the positive electrode membrane. A zone surrounded by orthographic projection of an outer edge of the insulation layer on the partition substrate covers orthographic projection of the negative electrode membrane on the partition substrate. This application can improve self-discharge and safety performances of electrochemical apparatuses.

公开(公告)号：US20230140763A1

公开(公告)日：2023-05-04

申请号：US18090808

申请日：2022-12-29

Applicant: Ningde Amperex Technology Limited

Inventor： Liangzhen Xiao ,  Qiaoshu Hu ,  Qiao Zeng

IPC: H01M50/595 ,  H01M50/538 ,  H01M50/586

Abstract: An electrochemical device includes: an electrode assembly and a first adhesive tape. The electrode assembly includes a body portion and a first metal portion. The body portion includes a first part and a second part, the first part is electrically connected to the first metal portion. A junction between the first part and the first metal portion in the first direction is a first boundary line, and a junction between the first part and the second part is a second boundary line. The first adhesive tape includes a first tape edge. The first adhesive tape is disposed on the first surface and the third surface. Viewed from a direction perpendicular to the first surface, the first tape edge is located between the first boundary line and the second boundary line.

公开(公告)号：US20230136622A1

公开(公告)日：2023-05-04

申请号：US18090086

申请日：2022-12-28

Applicant: Ningde Amperex Technology Limited

Inventor： Yibo Zhang ,  Qiaoshu Hu ,  Kun Yan ,  Nan Zhang

IPC: H01M4/66

Abstract: A current collector, an electrochemical device containing the current collector, and an electronic device. The current collector includes a polymer substrate material and a conductive material. An electron resistivity of the current collector in an X-Y in-plane direction is 10 Ω·cm to 1000 Ω·cm, and an electron resistivity of the current collector in a Z direction is 0.01 Ω·cm to 30 Ω·cm. The current collector according to this application is excellent in oxidation resistance, reduction resistance, ionic insulation, mechanical strength, thermal stability, increases the energy density of bipolar electrochemical devices, and is more cost-effective and more suitable for mass production.

公开(公告)号：US20220223968A1

公开(公告)日：2022-07-14

申请号：US17708580

申请日：2022-03-30

Applicant: Ningde Amperex Technology Limited

Inventor： Yibo Zhang ,  Kun Yan ,  Qiaoshu Hu ,  Nan Zhang

IPC: H01M50/293 ,  H01M50/193 ,  H01M50/122 ,  H01M50/126

Abstract: A partition plate for use in an electrochemical device, an electrochemical device, and an electronic device are disclosed. The partition plate for use in an electrochemical device is ion-insulative and includes an intermediate layer and a sealing layer. The sealing layer is located on an upper surface and a lower surface of the intermediate layer. A material of the intermediate layer includes at least one of a carbon material, a first polymer material, or a metal material. A material of the sealing layer includes a second polymer material. A temperature at which the sealing layer starts to soften is at least 10° C. lower than a temperature at which the intermediate layer starts to soften. Three layers of superimposed composite films ensure ion insulation and sealing reliability.