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1. WO2020134648 - ELECTRODE PLATE, ELECTROCHEMICAL DEVICE, BATTERY MODULE, BATTERY PACK, AND EQUIPMENT

Publication Number WO/2020/134648
Publication Date 02.07.2020
International Application No. PCT/CN2019/117141
International Filing Date 11.11.2019
IPC
H01M 4/66 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
64Carriers or collectors
66Selection of materials
H01M 4/13 2010.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of, or comprising, active material
13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
CPC
H01M 10/0525
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
10Secondary cells; Manufacture thereof
05Accumulators with non-aqueous electrolyte
052Li-accumulators
0525Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
H01M 4/621
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
62Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
621Binders
H01M 4/667
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
4Electrodes
02Electrodes composed of or comprising active material
64Carriers or collectors
66Selection of materials
665Composites
667in the form of layers, e.g. coatings
Y02E 60/10
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
60Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
10Energy storage using batteries
Applicants
  • 宁德时代新能源科技股份有限公司 CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED [CN]/[CN]
Inventors
  • 李静 LI, Jing
  • 薛庆瑞 XUE, Qingrui
  • 张子格 ZHANG, Zige
  • 李伟 LI, Wei
  • 杨献伟 YANG, Xianwei
Agents
  • 北京汇思诚业知识产权代理有限公司 UNI-INTEL PATENT AND TRADEMARK LAW FIRM
Priority Data
201811638781.129.12.2018CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) ELECTRODE PLATE, ELECTROCHEMICAL DEVICE, BATTERY MODULE, BATTERY PACK, AND EQUIPMENT
(FR) PLAQUE D'ÉLECTRODE, DISPOSITIF ÉLECTROCHIMIQUE, MODULE DE BATTERIE, BLOC-BATTERIE ET ÉQUIPEMENT
(ZH) 一种电极极片、电化学装置、电池模块、电池包和设备
Abstract
(EN)
The present application relates to the field of batteries, and in particular relates to an electrode plate, an electrochemical device, a battery module, a battery pack, and a piece of equipment. The electrode plate of the present application comprises a current collector, and an electrode active material layer arranged on at least one surface of the current collector, wherein the current collector comprises a support layer and a conductive layer arranged on at least one surface of the support layer; the thickness D2 of a single side of the conductive layer satisfies 30 nm ≤ D2 ≤ 3 μm; and a conductive bottom coating layer, which contains a conductive material and a binder, is further provided between the current collector and the electrode active material layer, and the binder in the conductive bottom coating layer contains a water-soluble binder. The electrode plate of the present application has a good machinability, and the electrochemical device containing the electrode plate has a high energy density, a good electrical performance and long-term reliability.
(FR)
La présente invention concerne le domaine des batteries, et en particulier, une plaque d'électrode, un dispositif électrochimique, un module de batterie, un bloc-batterie et une pièce d'équipement. La plaque d'électrode de la présente invention comprend un collecteur de courant, et une couche de matériau actif d'électrode disposée sur au moins une surface du collecteur de courant, le collecteur de courant comprenant une couche de support et une couche conductrice disposée sur au moins une surface de la couche de support ; l'épaisseur D2 d'un côté unique de la couche conductrice satisfait 30 nm ≤ D2 ≤ 3 μm ; et une couche de revêtement inférieure conductrice, qui contient un matériau conducteur et un liant, est en outre disposée entre le collecteur de courant et la couche de matériau actif d'électrode, et le liant dans la couche de revêtement inférieure conducteur contient un liant soluble dans l'eau. La plaque d'électrode de la présente invention présente une bonne usinabilité, et le dispositif électrochimique contenant la plaque d'électrode présente une densité d'énergie élevée, une bonne performance électrique et une fiabilité à long terme.
(ZH)
本申请涉及电池领域,具体地讲,涉及一种电极极片、电化学装置、电池模块、电池包和设备。本申请的电极极片包括集流体和设置于所述集流体至少一个表面上的电极活性材料层,其中,所述集流体包括支撑层和设置于支撑层至少一个表面上的导电层,所述导电层的单面厚度D2满足:30nm≤D2≤3μm,且在所述集流体与所述电极活性材料层之间还设置有包含导电材料和粘结剂的导电底涂层,且所述导电底涂层中的粘结剂包含水性粘结剂。本申请的电极极片具有良好的可加工性,包含该电极极片的电化学装置具有高的能量密度和良好的电性能以及长期可靠性。
Also published as
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