Lithium supplement cell structure and lithium ion battery

The utility model belongs to the technical field of lithium ion batteries, and particularly relates to a lithium-supplementing battery core structure and a lithium ion battery, the lithium-supplementing battery core structure comprises a battery core assembly and a metal lithium sheet used for supplementing lithium, the battery core assembly comprises a first negative plate, a first isolating membrane, a positive plate, a second isolating membrane and a second negative plate which are stacked in sequence, one end of the metal lithium sheet is electrically connected with the first negative plate, and the other end of the metal lithium sheet is electrically connected with the second negative plate. The lithium supplementing battery core structure can supplement lithium to the negative electrode, and is simple in structure, good in safety and easy to produce in a large scale. 本实用新型属于锂离子电池技术领域，尤其涉及一种补锂电芯结构及锂离子电池，包括电芯组件以及用于补锂的金属锂片，所述电芯组件包括依次层叠放置的第一负极片、第一隔离膜、正极片、第二隔离膜以及第二负极片，所述金属锂片的一端与所述第一负极片电连接，金属锂片的另一端与所述第二负极片电连接