Lithium ion battery current collector, lithium ion battery electrode and lithium ion battery

• Main Authors: LIU TONG, MEI YUENI, CHENG GUANGYU, LIU XINWEI, WANG KE, GU HONGHUI
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2023
• Subjects: ADDITIVE MANUFACTURING TECHNOLOGY; ADDITIVE MANUFACTURING, i.e. MANUFACTURING OFTHREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVEAGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING,STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING; BASIC ELECTRIC ELEMENTS; CASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELECTRICITY; MACHINE TOOLS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; POWDER METALLURGY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM; WORKING METALLIC POWDER

The invention discloses a current collector of a lithium ion battery. The current collector comprises a grid frame and a metal film, the grid frame is made of a positive temperature coefficient material; the plurality of metal films are arranged in the plurality of grid holes of the grid frame, and the metal films in the adjacent grid holes are mutually independent; the thickness of the grid frame is not smaller than that of the metal film. The invention also discloses a lithium ion battery electrode containing the current collector and a lithium ion battery, the current collector provided by the invention can greatly improve the safety performance of the battery, has the advantages of simple structure and low cost, and is beneficial to realizing large-scale production. 本发明公开了一种锂离子电池集流体，包括网格框架和金属薄膜；网格框架采用正温度系数材料；若干个金属薄膜设于网格框架的若干个网格孔洞中，相邻网格孔洞中的金属薄膜相互独立；网格框架的厚度不小于金属薄膜。本发明还公开了一种包含上述集流体的锂离子电池电极及锂离子电池，本发明集流体能够大幅提高电池的安全性能，同时存在结构简单，成本低廉的优势，有利于实现大规模生产。