Contemporary Amperex Technology Co., Ltd.

Contemporary Amperex Technology (Hong Kong) Limited

Contemporary Amperex Technology Limited

Zige Zhang

Qingrui Xue

Wei Li

Jing Li

Xianwei Yang

Yang Zhang

Pengxiang Wang

Chengdu Liang

Miao Jiang

Long Wang

Yang Lu

Yaru Zhou

Kai Wu

Wenwei Chen

Changliang Sheng

Yuqian Wen

Jianbao Xu

Yu Zhang

Xiaona Wang

Zhengyuan Zhao

Jinsong Zhang

The electrode plate according to the present application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, wherein the current collector includes a support layer and a conductive layer, the conductive layer has a single-sided thickness D2 satisfying: 30 nm≤D2≤3 μm; and the conductive agent is unevenly distributed in the electrode active material layer in a thickness direction of the electrode active material layer, in which the weight percentage of the conductive agent in the inner region of the electrode active material layer is higher than the weight percentage content of the conductive agent in the outer region of the electrode active material layer, and the binder in the inner region of the electrode active material layer includes a water-dispersible binder.

Electrode plate and electrochemical device

This application relates to an electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The electrode plate includes a current collector and an electrode active material layer disposed on at least one surface of the current collector. The current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, a single-sided thickness Dof the conductive layer satisfies: 30 nm≤D≤3 μm; and a conductive primer layer containing a conductive material and a binder is disposed between the current collector and the electrode active material layer, the binder in the conductive primer layer containing an acrylic based/acrylate based water-dispersible binder. The electrode plate of this application has good quality, and the electrochemical apparatus containing the electrode plate has a high energy density and a good electrical performance and long-term reliability.

Electrode plate, electrochemical apparatus, battery module, battery pack, and device

Positive plate, electrochemical device including same, and apparatus thereof are disclosed. The positive plate includes a current collector and an electrode active material layer arranged on at least one surface of the current collector, the current collector includes a support layer and a conductive layer arranged on at least one surface of the support layer, a single-sided thickness D2 of the conductive layer satisfies: 30 nm≤D2≤3 μm. A material of the conductive layer is aluminum or aluminum alloy, and a density of the conductive layer is 2.5 g/cm-2.8 g/cm. The electrode active material layer includes an electrode active material, a binder, and a conductive agent, and the binder has an uneven distribution in a thickness direction of the electrode active material layer.

Positive plate, electrochemical device comprising same and apparatus thereof

An electrode plate includes an active material layer, a current collector including an insulating layer and first and second conductive layers sandwiching the insulating layer, and a conductive structure. The conductive structure includes a first conductive member including a first section arranged along a side of the first conductive layer and a second section extending from the first section and beyond the current collector in a direction away from the active material layer, and a second conductive member including a first connecting section connected to the second conductive layer, a bent section connected to the first connecting section and bent towards the first conductive member relative to the first connecting section, and a second connecting section bent backward relative to the bent section to be sandwiched between the first section and the first conductive layer.

Secondary battery and electrode plate

A secondary battery and an electrode member thereof, a battery module, and a related apparatus are provided. The electrode member includes a current collector, an active material layer, an adapting sheet, and an electrode lead. The current collector includes an insulating substrate, a first conductive layer, and a second conductive layer. The first conductive layer and the second conductive layer each include a coated region and an uncoated region, the coated region is coated with an active material layer, and the uncoated region is not coated with an active material layer, a size of the current collector in a length direction is larger than that in a width direction, and the uncoated region is located on a side of the coated region in a length direction. The adapting sheet includes a first conductive member and a second conductive member.

Secondary battery and electrode member thereof, battery module, and related apparatus

This application relates to an electrode plate, including a current collector and an electrode active material layer disposed on at least one surface of the current collector. The current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, where single-side thickness D2 of the conductive layer satisfies: 30 nm≤D2≤3 μm, the support layer includes a polymer material or a polymer composite material, and thickness D1 of the support layer satisfies: 1 μm≤D1≤20 μm. The electrode active material layer includes an electrode active material, a binder, and a conductive agent, where total thickness Dof the electrode active material layer satisfies: 200≥D/D1≥1, and based on total weight of the electrode active material layer, the binder content in the electrode active material layer is not less than 1 wt %.

Electrode plate, electrochemical apparatus, and apparatus

This application relates to the battery field, and specifically, to a positive electrode plate, an electrochemical apparatus, and an apparatus. The positive electrode plate in this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, a single-sided thickness D2 of the conductive layer satisfies 30 nmD23 μm, a thickness D1 of the support layer satisfies 1 μmD130 μm, and the support layer is made of a polymer material or a polymer composite material; and the electrode active material layer includes an electrode active material, a binder, and a conductive agent, and a total thickness Dof the electrode active material layer is not greater than 170 μm.

Positive electrode plate, electrochemical apparatus, and apparatus

This application relates to an electrode plate, an electrochemical apparatus, and an apparatus thereof. The electrode plate in this application comprises a current collector, an electrode active material layer disposed on at least one surface of the current collector, and an electrical connection member electrically connected to the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, a single-sided thickness D2 of the conductive layer satisfies: 30 nm≤D2≤3 μm, and the support layer is a polymer material layer or a polymer composite material layer; and the electrode active material layer includes an electrode active material, a binder, and a conductive agent, and viewed in a width direction of a coated surface of the electrode plate, the electrode active material layer includes 2n+1 zones based on compacted density.

Electrode plate, electrochemical apparatus, and apparatus thereof

This application relates to an electrode plate, an electrochemical apparatus, and an apparatus thereof. The electrode plate of this application includes a current collector, an electrode active material layer provided on at least one surface of the current collector, and an electrical connection member electrically connected to the current collector. The electrode active material layer is provided on a main body portion of the current collector in a zone referred to as a film zone, the electrical connection member and the current collector are welded and connected at an edge of the current collector, at a welding zone referred to as an transfer welding zone and a transition zone is referred to as an extension zone, where the transition zone is of the current collector between the film zone and the transfer welding zone, and is coated with no electrode active material layer.

This application relates to the battery field, and specifically, to an electrode plate, an electrochemical device, and an apparatus. The electrode plate of this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, a single-sided thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm, the support layer is made of a polymer material or a polymer composite material, and a thickness D1 of the support layer satisfies 1 μm≤D1≤30 μm; and the electrode active material layer includes an electrode active material, a binder, and a conductive agent.

Electrode plate, electrochemical device, and apparatus

An electrode plate includes a current collector. The current collector includes a conductive layer and an insulating layer. The conductive layer includes a tab portion. In thickness direction of the electrode plate, the conductive layer is provided at two opposite sides of the insulating layer. The insulating layer includes a first region and a second region, and in width direction of the electrode plate, at least one end of the first region is connected to the second region. Thickness of the second region is less than thickness of the first region, and the tab portion is at least partially disposed in the second region. The electrode plate further includes an active substance layer applied on a surface of the conductive layer facing away from the insulating layer. The tab portion is not coated with the active substance layer.

Electrode plate, electrode assembly, battery cell, battery, and electric device

This application relates to the battery field, and specifically, to an electrode plate, an electrochemical apparatus, a battery module, a battery pack, and a device. The electrode plate in this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer, a single-side thickness Dof the conductive layer satisfies 30 nm≤D≤3 μm, and a conductive primer layer including a conductive material and a bonding agent is further disposed between the current collector and the electrode active material layer. The electrode plate in this application has good machinability. An electrochemical apparatus including the electrode plate has high energy density, good electrical performance, and long-term reliability.

This application relates to an electrode plate that includes a current collector and an electrode active material layer disposed on at least one surface of the current collector. The current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer. A single-side thickness D2 of the conductive layer satisfies 30 nm≤D2≤3 μm, a conductive primer layer including a conductive material and a bonding agent is further disposed between the current collector and the electrode active material layer. The bonding agent in the conductive primer layer includes a water-based bonding agent. The electrode plate in this application has good machinability. An electrochemical apparatus including the electrode plate has high energy density, good electrical performance, and long-term reliability.

Embodiments provide an electrode assembly, a battery cell, a battery, an electrical apparatus, and a manufacturing method and device. In those embodiments, the electrode assembly includes: an electrode plate, including a main portion and at least one protruding portion. The main portion includes a metal substrate and an active material layer coated on a surface of the metal substrate. The protruding portion is connected to the metal substrate. The metal substrate protrudes along a length direction of the electrode assembly. Along a thickness direction of the electrode assembly, a size of at least a part of the protruding portion is greater than a size of the metal substrate. The electrode assembly according to the Embodiments aims to solve a technical problem of severe heat emission of a tab.

Electrode assembly, battery cell, battery, electrical apparatus, and manufacturing method and device

This application relates to the battery field, and specifically, to a positive electrode plate, an electrochemical apparatus, and an apparatus. The positive electrode plate in this application includes a current collector and an electrode active material layer disposed on at least one surface of the current collector, where the current collector includes a support layer and a conductive layer disposed on at least one surface of the support layer. A single-sided thickness Dof the conductive layer satisfies 30 nm≤D≤3 μm. A thickness Dof the support layer satisfies 1 μm≤D≤30 μm. The support layer is made of a polymer material or a polymer composite material. The electrode active material layer includes electrode active materials, a binder, and a conductive agent.

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Ningde, China

Zige Zhang