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：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：US20220223983A1

公开(公告)日：2022-07-14

申请号：US17709943

申请日：2022-03-31

Applicant: Ningde Amperex Technology Limited

Inventor： Kun Yan ,  Yu Ding ,  Yibo Zhang ,  Nan Zhang

IPC: H01M50/538 ,  H01M4/66 ,  H01M4/505 ,  H01M4/525 ,  H01M50/193

Abstract: An electrochemical device including a bipolar current collector. The bipolar current collector is hermetically connected to an outer package. Cavities independent of each other are formed on two opposite sides of the bipolar current collector. Each cavity contains an electrode assembly and an electrolytic solution. An electrode active material is disposed on at least one surface of the bipolar current collector. Adjacent electrode assemblies are connected in series. The electrochemical device according to this application not only improves the safety of the electrochemical device, but the electrode active material on the surface of the bipolar current collector also participates in a reaction process in the electrochemical device, so that the electrochemical device achieves both a high-voltage output and a relatively high energy density.

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.