公开(公告)号：US20190198840A1

公开(公告)日：2019-06-27

申请号：US16211552

申请日：2018-12-06

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Huafeng HUANG ,  Qisen HUANG ,  Shiwen WANG ,  Chengdu LIANG

IPC: H01M2/16 ,  H01M2/14

CPC classification number: H01M2/1686 ,  H01M2/145 ,  H01M2/1646 ,  H01M2/1653 ,  H01M10/0525 ,  H01M10/4235

Abstract: The present disclosure relates to the field of energy storage, and in particular to a separator, a method for preparing the separator, and an electrochemical device including the separator. The separator includes a porous substrate. At least one of a porous inorganic layer and an organic particle coating layer is provided on at least one surface of the porous substrate, and a composite layer is provided on at least one surface of the porous substrate. The composite layer includes a porous inorganic layer and an organic particle coating layer sequentially disposed on the surface of the porous substrate. The porous inorganic layer includes an inorganic dielectric material containing no binder. The organic particle coating layer is a coating discontinuously distributed on the porous inorganic layer. The composite layer has a mass of 0.2 g/m2 to 8.4 g/m2 per unit area.

公开(公告)号：US20200006775A1

公开(公告)日：2020-01-02

申请号：US16452542

申请日：2019-06-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Cheng LI ,  Changliang SHENG ,  Huafeng HUANG ,  Qisen HUANG

IPC: H01M4/62 ,  H01M4/133 ,  H01M4/1393 ,  H01M4/04 ,  H01M4/587 ,  C23C14/00 ,  C23C14/08 ,  C23C14/30

Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector, a negative active material layer, and an inorganic dielectric layer which are provided in a stacked manner; the negative active material layer comprises opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; the inorganic dielectric layer is disposed on the first surface of the negative active material layer and consists of an inorganic dielectric material. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.

公开(公告)号：US20190305321A1

公开(公告)日：2019-10-03

申请号：US16366505

申请日：2019-03-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Huafeng HUANG ,  Qisen HUANG ,  Xin LIU

IPC: H01M4/66 ,  H01M4/80

Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector includes an insulation layer; and a conductive layer at least located on at least one surface of the insulation layer. The conductive layer has a room temperature thin film resistor of RS, where 0.01Ω/□≤RS≤0.15Ω/□. The current collector is provided with a plurality of holes penetrating through the insulation layer and the conductive layer.

公开(公告)号：US20190305320A1

公开(公告)日：2019-10-03

申请号：US16366357

申请日：2019-03-27

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Huafeng HUANG ,  Qisen HUANG ,  Xin LIU

IPC: H01M4/66 ,  H01M4/80

Abstract: The present disclosure relates to the technical field of battery, and in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector includes an insulation layer; and a conductive layer at least located on at least one surface of the insulation layer. The conductive layer has a thickness of D2, where 30 nm≤D2≤3 μm. The current collector is provided with a plurality of holes penetrating through the insulation layer and the conductive layer.

公开(公告)号：US20200295377A1

公开(公告)日：2020-09-17

申请号：US16342831

申请日：2018-12-05

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Huafeng HUANG ,  Qisen HUANG

IPC: H01M4/66 ,  H01M10/0525

Abstract: The present disclosure relates to the field of battery and, in particular, relates to a current collector, an electrode plate including the current collector, and an electrochemical device. The current collector of the present disclosure includes an insulation layer and a conductive layer. The insulation layer is used to support the conductive layer. The conductive layer is used to support an electrode active material layer and is located on at least one surface of the insulation layer. The insulation layer has a density smaller than that of the conductive layer. The insulation layer has a thickness of D1 satisfying 1 μm≤D1≤10 μm. The conductive layer has a thickness of D2 satisfying 200 nm≤D2≤1.5 μm. The insulation layer has a tensile strength greater than or equal to 150 MPa.

公开(公告)号：US20200006754A1

公开(公告)日：2020-01-02

申请号：US16452541

申请日：2019-06-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Changliang SHENG ,  Huafeng HUANG ,  Qisen HUANG

IPC: H01M4/139 ,  H01M4/36 ,  H01M10/0585 ,  H01M10/0525

Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector; a negative active material layer disposed on at least one surface of the negative current collector, the negative active material layer comprising opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; and an inorganic dielectric layer consisting of an inorganic dielectric material disposed on the first surface of the negative active material layer. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.

公开(公告)号：US20190305319A1

公开(公告)日：2019-10-03

申请号：US16364751

申请日：2019-03-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Chengdu LIANG ,  Huafeng HUANG ,  Qisen HUANG ,  Xin LIU

IPC: H01M4/66 ,  H01M4/70

Abstract: The present disclosure relates to the field of batteries and, specifically, to a current collector comprising a support layer, a conductive layer and a conductive material. The conductive layer is located on two surfaces of the support layer. A plurality of holes extending through the support layer and the conductive layer is provided in the current collector and is filled with the conductive material. The current collector of the present disclosure can improve the short circuit resistance of the battery using the current collector when a short circuit occurs under abnormal conditions, so that the short circuit current can be greatly reduced, and thus heat generated by the short circuit can be greatly reduced, thereby improving the safety performance of the battery.

公开(公告)号：US20190173092A1

公开(公告)日：2019-06-06

申请号：US16209317

申请日：2018-12-04

Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

Inventor： Chengdu LIANG ,  Huafeng HUANG ,  Qisen HUANG

IPC: H01M4/66 ,  H01M10/0525

Abstract: The present disclosure provides a current collector, an electrode plate, and a battery. The current collector includes an insulation layer, a conductive layer and at least one protective layer. The insulation layer is used to support the conductive layer. The conductive layer is used to support an electrode active material layer and located above at least one surface of the insulation layer. The conductive layer has a thickness of D2 satisfying 300 nm≤D2≤2 μm. The at least one protective layer is arranged on at least one surface of the conductive layer.

公开(公告)号：US20220246903A1

公开(公告)日：2022-08-04

申请号：US17723531

申请日：2022-04-19

Applicant: Contemporary Amperex Technology Co.,Limited

Inventor： Shiwen WANG ,  Qisen HUANG ,  Huafeng HUANG ,  Chengdu LIANG

IPC: H01M4/131 ,  H01M4/04 ,  H01M4/1391 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/1397 ,  H01M4/136 ,  H01M50/46 ,  H01M10/0525

Abstract: The present disclosure relates to the technical field of energy storage, and in particular, relates to a positive electrode, a method for preparing the positive electrode and an electrochemical device. The positive electrode includes a current collector and a positive electrode active material layer that contains positive electrode active material and is arranged on at least one surface of the current collector. An inorganic layer having a thickness of 20 nm to 2000 nm is arranged on the surface of the at least one positive electrode active material layer away from the current collector. The inorganic layer is a porous dielectric layer containing no binder, and the inorganic layer has a porosity of 10%˜60%. The positive electrode active material layer according to the present disclosure significantly improves the cycle performance, high-temperature storage performance and safety of the electrochemical device.

公开(公告)号：US20200006756A1

公开(公告)日：2020-01-02

申请号：US16452543

申请日：2019-06-26

Applicant: Contemporary Amperex Technology Co., Limited

Inventor： Huafeng HUANG ,  Changliang SHENG ,  Cheng LI ,  Qisen HUANG

IPC: H01M4/1393 ,  H01M10/0525 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/1391 ,  H01M4/64

Abstract: The invention refers to negative electrode plate, preparation method thereof and electrochemical device. The negative electrode plate comprises: a negative current collector, a negative active material layer, and an inorganic dielectric layer which are provided in a stacked manner; the negative active material layer comprises opposite first surface and second surface, wherein the first surface is disposed away from the negative current collector; the inorganic dielectric layer is disposed on the first surface of the negative active material layer. The negative electrode plate provided by the application is useful in an electrochemical device, and can result in an electrochemical device having simultaneously excellent safety performance and cycle performance.