▎ 摘　　要

NOVELTY - The core comprises an anode sheet comprising a first anode sheet and a second anode sheet. The first anode sheet comprises a first anode material layer disposed on a first anode current collector. The first anode material layer comprises a first anode active material which is lithium iron phosphate. The second anode sheet comprises a second anode current collector and a second anode material layer disposed on the second anode current collector. The second anode material layer comprises a second anode active material chosen from combination of lithium cobaltate, nickel cobalt lithium manganate, lithium manganate, cobalt-free layered anode material, and manganese-based lithium-rich material, where the anode conductive agent is at least one of conductive carbon black, carbon fiber, acetylene black, Ketjen black, graphene or carbon nanotube, and the anode agglomerant is at least one of fluorine-containing resin, polypropylene resin, fiber-type agglomerant or polyimide-type agglomerant. USE - Used as lithium ion battery core. ADVANTAGE - The code: improves low temperature capability of lithium iron phosphate energy storage battery core by improving anode piece structure; has simple design and manufacturing technique; reduces production cost; and considers the influence of electric core itself temperature rise to the charging ability, so that it has better charging ability at low temperature. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a lithium ion battery; a battery module; and an electric device. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of the lithium ion battery core.