Abstract: Alithium secondary battery for use in electric vehicle, includes: a battery case, and an electricity-generating body including a positive electrode, a negative electrode, and a separator, the positive and the negative electrode being wound or laminated via the separator so that the positive electrode and negative electrode are not brought into direct contact with each other. Each single battery has a ratio (X/E) of battery output X (W) and battery energy E (Wh), of 2 to 36 or a product (R×E) of battery internal resistance R (m&OHgr;) and battery energy E (Wh), of 50 to 900 (m&OHgr;·Wh). The lithium secondary battery is used in an electric vehicle as combined batteries formed by connecting a required number of the single batteries in series.

Abstract: A lithium secondary battery is provided in which even if the depth of discharge becomes deep, lowering of an power is small, and charging and discharging characteristics are excellent, and which is suitably used particularly as a battery for driving a motor of an electric vehicle or the like. In the lithium secondary battery, an internal electrode body formed by winding a positive electrode and a negative electrode through a separator made of porous polymer is contained in a battery case, and an organic electrolyte is used. An power at a depth of discharge of 80% is not smaller than 60% of an power at a depth of discharge of 0%.

Abstract: A lithium secondary battery for use in electric vehicle, includes: a battery case, and an electricity-generating body including a positive electrode, a negative electrode, and a separator, the positive and the negative electrode being wound or laminated via the separator so that the positive electrode and negative electrode are not brought into direct contact with each other. Each single battery has a ratio (X/E) of battery output X (W) and battery energy E (Wh), of 2 to 36 or a product (R×E) of battery internal resistance R (m&OHgr;) and battery energy E (Wh), of 50 to 900 (m&OHgr;·Wh). The lithium secondary battery is used in an electric vehicle as combined batteries formed by connecting a required number of the single batteries in series.

Abstract: The invention provides a lithium secondary cell including an inner electrode body impregnated with a non-aqueous electrolyte, made up of a positive electrode and a negative electrode each made of at least one metallic foil wound or laminated together and collectors to lead out a current from this inner electrode body. The edges of the metallic foil of the positive electrode and/or the negative electrode and predetermined parts of the positive electrode collector and/or negative electrode collector are joined together to lead out a current from the inner electrode body. The edges of the metallic foil, the edges (joint edges) arranged to be joined to the predetermined parts of the positive electrode collector and/or the negative electrode collector and the predetermined parts of the positive electrode collector and/or the negative electrode collector are joined together. The lithium secondary cell has excellent productivity and space-saving capability.

Abstract: A lithium secondary battery has small internal resistance and has good charge-discharge cycle characteristics, with a lithium transition metal compound being used as a positive active material. A portion of transition element Me in a lithium transition metal compound LiMexOy to be used as a positive active material is substituted by not less than two kinds selected from the group consisting of Li, Fe, Mn, Ni, Mg, Zn, B, Al, Co, Cr, Si, Ti, Sn, P, V, Sb, Nb, Ta, Mo, and W. Here, M represents substitution elements, and M≢Me.

Abstract: A lithium secondary battery is provided in which even if the depth of discharge becomes deep, lowering of an power is small, and charging and discharging characteristics are excellent, and which is suitably used particularly as a battery for driving a motor of an electric vehicle or the like. In the lithium secondary battery, an internal electrode body formed by winding a lithium manganese positive electrode and a graphite negative electrode through a separator made of porous polymer is contained in a battery case, and an organic electrolyte is used. An power at a depth of discharge of 80% is not smaller than 60% of an power at a depth of discharge of 0%.

Abstract: Provided are a method for filling an electrolyte solution and a battery structure of a lithium secondary battery comprising an internal electrode body formed by winding a positive electrode, and a negative electrode, with sandwiching a separator therebetween around the outer periphery of a core, and an electrolyte solution to impregnate said internal electrode body; said method being excellent in the productivity, and battery performance as well, and being characterized by an easy filling of an electrode solution, with minimization of excessive electrode solution in the battery, by virtue of the provision of an electrolyte solution injection opening in a specific position, through which the electrolyte solution is injected and extracting efficiently by using a nozzle for injection and/or extraction of electrolyte solution.

Abstract: Provided are a method for filling an electrolyte solution and a battery structure of a lithium secondary battery comprising an internal electrode body formed by winding a positive electrode, and a negative electrode, with sandwiching a separator therebetween around the outer periphery of a core, and an electrolyte solution to impregnate said internal electrode body; said method being excellent in the productivity, and battery performance as well, and being characterized by an easy filling of an electrode solution, with minimization of excessive electrode solution in the battery, by virtue of the provision of an electrolyte solution injection opening in a specific position, through which the electrolyte solution is injected and extracting efficiently by using a nozzle for injection and/or extraction of electrolyte solution.

Abstract: A lithium secondary battery includes a positive electrode active material which is composed mainly of Li and Mn and has a cubic spinel structure, the primary particles of the positive electrode active material having a substantially octahedral shape constituted mainly by flat crystal faces. In this lithium secondary battery, the morphology of the particles constituting the positive electrode active material is controlled; thereby, the resistance of the positive electrode active material and accordingly the internal resistance of the battery are lowered; as a result, discharge in large current has been made possible.

Abstract: A lithium secondary battery includes a battery case, and an internal electrode body contained in the battery case and including a positive electrode and a negative electrode wound through a separator film made of porous polymer, and uses a nonaqueous organic electrolyte. Opposing pressure release mechanisms are disposed at both ends of the battery case in the winding direction of the positive electrode and the negative electrode. The lithium secondary battery is simple in fabrication, has small internal resistance, and is superior in safety.

Abstract: A lithium secondary battery includes an internal electrode body including a positive electrode, a negative electrode, a separator, the positive electrode and the negative electrode being wound via the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other, an organic electrolyte, and a battery case containing the internal electrode body. A pipe is used as the battery case. The lithium secondary battery is excellent in reliability and can be produced at low processing costs.

Abstract: Provided are a method for filling an electrolyte solution and a battery structure of a lithium secondary battery comprising an internal electrode body formed by winding a positive electrode, and a negative electrode, with a separator sandwiched therebetween around the outer periphery of a core, and an electrolyte solution to impregnate said internal electrode body; said method being excellent in productivity, and battery performance as well, and being characterized by an easy filling of an electrode solution, with minimization of excessive electrode solution in the battery, by virtue of the provision of an electrolyte solution injection opening in a specific position, through which the electrolyte solution is injected and extracting efficiently by using a nozzle for injection and/or extraction of electrolyte solution.

Abstract: A lithium secondary battery includes: a battery case, and an internal electrode body 1 contained in the battery case and including a positive electrode 2, a negative electrode 3, and a separator 4 made of porous polymer. The positive electrode and the negative electrode are wound and laminated through the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other. The battery case is composed of pure aluminum or aluminum alloy in which one or more components selected from manganese, magnesium, silicon and copper is added in aluminum. The lithium secondary battery has high weight energy density, is superior in safety, and is used for, particularly, an electric vehicle.

Abstract: A lithium secondary battery includes a battery case, an internal electrode body contained in the battery case and including a positive electrode, a negative electrode and a separator made of porous polymer. The positive electrode and the negative electrode are wound or laminated so that the positive electrode and negative electrode are not brought into direct contact with each other via the separator. The respective resistance value of multiple tabs for electricity collection to be connected to the positive electrode and negative electrode was set to remain within the range of ±20% of the average resistance value of the tabs. The lithium secondary battery maintains a good charge-discharge characteristic even during high-output cycle operation and in particular may be preferably used for a drive motor of an electric vehicle.

Abstract: A lithium secondary battery has small internal resistance and has good charge-discharge cycle characteristics, with a lithium transition metal compound being used as a positive active material. A portion of transition element Me in a lithium transition metal compound LiMeXOY to be used as a positive active material is substituted by not less than two substitution elements M selected from the group consisting of Li, Fe, Mn, Ni, Mg, Zn, B, Al, Co, Cr, Si, Ti, Sn, P, V, Sb, Nb, Ta, Mo, and W. To provide LiMZMeN-ZOY wherein M≠Me .

Abstract: A lithium secondary battery includes: a battery case, and an internal electrode body (1) contained in the battery case and including a positive electrode (2), a negative electrode (3), and a separator (4) made of porous polymer. The battery case is composed of pure aluminum or aluminum alloy in which one or more components selected from manganese, magnesium, silicon and copper is added to the aluminum. The lithium secondary battery has high energy density, is superior in safety, and is used for, particularly, an electric vehicle. Preferably the battery has a capacity of 50 Wh or more, and the following relationships are established: 0.004≦t/d≦0.04, where the battery case is cylindrical, its outer diameter is d (mm), and its wall thickness is t (mm); and C/(w·c)≦0.03, where current capacity is C (Ah), battery weight is w (kg), and specific heat of the battery is c(W/kg° C.).

Abstract: A lithium secondary battery includes an internal electrode body including a positive electrode, a negative electrode, and a separator. The positive electrode and the negative electrode are wound or laminated via the separator so that the positive electrode and the negative electrode are not brought into direct contact with each other. At least a plurality of tabs for current collecting were provided to have a total cross-sectional area of the tabs be not less than a constant area in accordance with the quality of the material to be used for the tabs so that the tabs to be connected to each of the positive and negative electrodes may not respectively fuse when at least 100 A current has flown through the lithium secondary battery. The lithium secondary battery maintains a good charge-discharge cycle characteristics, and safety may be secured with electricity being cut off when an excess current has occurred due to external short circuit, etc., so that the battery may not be exploded nor be ignited.

Abstract: A lithium secondary battery includes a battery case, and an internal electrode body contained in the battery case and including a positive electrode and a negative electrode wound through a separator film made of porous polymer, and uses a nonaqueous organic electrolyte. Opposing pressure release mechanisms are disposed at both ends of the battery case in the winding direction of the positive electrode and the negative electrode. The lithium secondary battery is simple in fabrication, has small internal resistance, and is superior in safety. Preferably, the ratio of the total area of opening portions where the pressure release mechanisms operate to the battery capacity is kept within a predefined range.

Abstract: A lithium secondary battery has an internal electrode body formed by winding a positive electrode and a negative electrode on an outer periphery wall of a hollow winding core and dipped into nonaqueous electrolyte solution, a cylindrical battery case containing this internal electrode body 1 inside with its both ends being open, and has electrode caps which have battery caps, internal terminals, and external terminals and seal the internal electrode body at the both open ends of the battery case. At least one of the electrode caps has a pressure release hole in a position corresponding with the center axis of the winding core.