NOVELTY - A lithium ion power battery comprises a shell having a nick, a cathode lug connector (21) with a cathode wiring terminal, and an anode lug connector with an anode wiring terminal; and a laminated cell (16). The shell is packaged out of the cell. The wiring terminals are extended out of the shell via a mounting aperture on the nick. The cell comprises cathode pieces (9), anode pieces (10), and insulating diaphragms (7). The cathode and anode pieces are alternately arranged, and separated by the diaphragms, and are all connected with their corresponding lug connector via fixing components (20).    USE - A lithium ion power battery.    ADVANTAGE - The lithium ion power battery has lower inner resistance, high rate discharge, high charge efficiency, long cycle service life, and high safety.    DETAILED DESCRIPTION - A lithium ion power battery comprises a shell, and a laminated cell (16). The shell is packaged out of the laminated cell. A nick is equipped on the shell, and comprises a mounting aperture and a liquid injecting aperture. A cathode lug connector (21) and an anode lug connector are fixed on the shell. A cathode wiring terminal is provided on an upper section of the cathode lug connector. An anode wiring terminal is provided on an upper section of the anode lug connector. The cathode and anode wiring terminals are extended out of the shell via the mounting aperture on the nick. The laminated cell comprises cathode pieces (9), anode pieces (10), and insulating diaphragms (7). The cathode pieces and the anode pieces are alternately arranged, and separated by the diaphragms. The diaphragms are further equipped at an outer side of a piece at an outermost layer. The cathode pieces at both left and right ends are used as pole pieces at the outermost layer. The cathode pieces are all connected with the cathode lug connector via fixing components (20). The anode pieces are all connected with the anode lug connector via the fixing components. Paper clip films (8) are filled between the anode pieces and the diaphragms connected at two sides, and are filled between the diaphragms at the outermost side and the cathode piece at the outermost layer. Heat conducting films (6) are further filled at an outer side of the diaphragm at the outermost side. The cathode piece comprises two films made from graphite materials, and a copper foil clamped between the two films. An upper end of the copper foil is used as a cathode lug (9-1-1). The anode piece comprises two films made from lithium iron phosphate materials, and an aluminum foil clamped between the two films. An upper end of the aluminum foil is used as an anode lug. Holes for the fixing components to pass through are opened on the cathode and anode lugs. The insulating diaphragm comprises two films made from polypropylene (PP) materials, and a film made from a polyethylene (PE) material and clamped between the two films. A battery shell insulating sleeve (26) is clamped at both upper and lower ends of the shell. The shell comprises a box (2), a cover plate (3), and an electron mounting plate (4) mounted below the cover plate. A safety explosion-proof film, i.e. a copper film, is glued on an explosion-proof aperture of the nick.    DESCRIPTION OF DRAWING(S) - The drawing is a sectional view of the lithium ion power battery.    Box (2)    Cover plate (3)    Electron mounting plate (4)    Heat conducting films (6)    Insulating diaphragms (7)    Paper clip films (8)    Cathode pieces (9)    Cathode lug (9-1-1)    Anode pieces (10)    Laminated cell (16)    Fixing components (20)    Cathode lug connector (21)    Battery shell insulating sleeve (26)