Abstract: A method of manufacturing a non-aqueous electrolyte solution secondary battery includes: (A) preparing a first composite material by mixing a first positive electrode active material, a first conductive material and a first binder; (B) preparing a second composite material by mixing a second positive electrode active material, a second conductive material and a second binder; and (C) manufacturing a positive electrode by forming a positive electrode composite layer including the first composite material and the second composite material. The first positive electrode active material has an average discharge potential lower than that of the second positive electrode active material. The first conductive material has a first OAN. The second conductive material has a second OAN. A ratio of the second OAN to the first OAN is 1.3 or more and 2.1 or less. A sum of the first OAN and the second OAN is 31.64 ml/100 g or less.

Abstract: The negative electrode plate includes at least a negative electrode composite material layer. The negative electrode composite material layer has a density of 1.5 g/cm3 or more. The negative electrode composite material layer contains at least first particles, second particles and a binder. The first particles contain graphite particles and an amorphous carbon material. The amorphous carbon material is coated on the surface of each graphite particle. The second particles are made of silicon oxide. The ratio of the second particles to the total amount of the first particles and the second particles is 2 mass % or more to 10 mass % or less. The negative electrode plate has a spring constant of 700 kN/mm or more to 3000 kN/mm or less.

Abstract: A method of manufacturing a non-aqueous electrolyte solution secondary battery includes: (A) preparing a first composite material by mixing a first positive electrode active material, a first conductive material and a first binder; (B) preparing a second composite material by mixing a second positive electrode active material, a second conductive material and a second binder; and (C) manufacturing a positive electrode by forming a positive electrode composite layer including the first composite material and the second composite material. The first positive electrode active material has an average discharge potential lower than that of the second positive electrode active material. The first conductive material has a first OAN. The second conductive material has a second OAN. A ratio of the second OAN to the first OAN is 1.3 or more and 2.1 or less. A sum of the first OAN and the second OAN is 31.64 ml/100 g or less.

Abstract: The present teaching provides a lithium ion secondary battery particularly improved in durability against high-rate charging/discharging. The lithium ion secondary battery of the present teaching includes, in the negative electrode active material layer, a negative electrode active material formed of a graphite type carbon material having a graphite structure in at least a part thereof, and a conductive carbon material, which is different from the graphite type carbon material and is formed of a conductive amorphous carbon. The negative electrode active material has a bulk density of 0.5 g/cm3 or more and 0.7 g/cm3 or less, and a BET specific surface area of 2 m2/g or more and 6 m2/g or less. The conductive carbon material has a bulk density of 0.4 g/cm3 or less, and a BET specific surface area of 50 m2/g or less.

Abstract: A flasher separates a geothermal fluid into steam and hot water. A steam turbine is driven by being supplied with the separated steam as a working medium. An evaporator is supplied with the steam from the steam turbine as a first heating medium, which is thereafter supplied to a first preheater via the evaporator. A superheater is supplied with the hot water separated by the flasher as a second heating medium, which is thereafter supplied to a second preheater via the superheater. A medium turbine is driven by being supplied, as a working medium, with a low-boiling-point medium having been heat-exchanged sequentially in the first preheater, the second preheater, the evaporator, and the superheater. In the evaporator and the first preheater, the low-boiling-point medium and the first heating medium are heat-exchanged. In the superheater and the second preheater, the low-boiling-point medium and the second heating medium are heat-exchanged.

Abstract: A non-aqueous electrolyte secondary battery includes a positive electrode composite material layer, the positive electrode composite material layer including: a composite particle including a positive electrode active material, a first conductive material and a binder; and a second conductive material arranged on a surface of the composite particle and having a DBP oil absorption number smaller than that of the first conductive material.

Abstract: A power generating system includes a flow dividing structure, a first detector, a flow dividing adjusting valve, a heat accumulator, a heat exchanger and a turbine. The flow dividing structure divides a first heat medium into a first flow path and a second flow path. The first detector detects a flow rate of the first heat medium. The flow dividing adjusting valve opens the second flow path when the flow rate of the first heat medium exceeds a predetermined value. The heat accumulator accumulates the first heat medium via the second flow path and delivers the first heat medium at a temporally leveled flow rate. The heat exchanger transfers heat from the first heat medium to a second heat medium having a lower boiling point than the first heat medium. The turbine rotationally moves by the second heat medium with heat having been transferred by the heat exchanging unit.

Abstract: A non-aqueous electrolyte secondary battery includes: a pressure-type current interrupt device arranged in a conductive path, for interrupting the conductive path when an internal pressure exceeds a working pressure; a non-aqueous electrolyte; and a positive electrode composite material layer. The non-aqueous electrolyte contains a gas generation agent that generates a gas in an overcharge region, and the positive electrode composite material layer contains a first positive electrode active material particle including lithium iron phosphate, and a second positive electrode active material particle including lithium-nickel composite oxide. A ratio of the first positive electrode active material particle to a total mass of the first positive electrode active material particle and the second positive electrode active material particle is 5% by mass or more and 20% by mass or less.

Abstract: A secondary battery includes an electrode body. The electrode body includes a positive electrode active material layer. The positive electrode active material layer includes a plurality of hollow positive electrode active material particles, a plurality of void supporting particles, and a plurality of conductive material particles. The void supporting particles are configured to provide voids having a pore diameter of 0.5 ?m or more in the positive electrode active material layer. The conductive material particles are configured to provide an electrical continuity of the positive electrode active material layer. A ratio of an average particle size of the void supporting particles to an average particle size of the hollow positive electrode active material particles is1/3 or more and 2 or less. The crushing strength of the void supporting particles is larger than the crushing strength of the conductive material particles.

Abstract: A low alloy steel ingot contains from 0.15 to 0.30% of C, from 0.03 to 0.2% of Si, from 0.5 to 2.0% of Mn, from 0.1 to 1.3% of Ni, from 1.5 to 3.5% of Cr, from 0.1 to 1.0% of Mo, and more than 0.15 to 0.35% of V, and optionally Ni, with a balance being Fe and unavoidable impurities. Performing quality heat treatment including a quenching step and a tempering step to the low alloy steel ingot to obtain a material, which has a grain size number of from 3 to 7 and is free from pro-eutectoid ferrite in a metallographic structure thereof, and which has a tensile strength of from 760 to 860 MPa and a fracture appearance transition temperature of not higher than 40° C.

Abstract: A flasher separates a geothermal fluid into steam and hot water. A steam turbine is driven by being supplied with the separated steam as a working medium. An evaporator is supplied with the steam from the steam turbine as a first heating medium, which is thereafter supplied to a first preheater via the evaporator. A superheater is supplied with the hot water separated by the flasher as a second heating medium, which is thereafter supplied to a second preheater via the superheater. A medium turbine is driven by being supplied, as a working medium, with a low-boiling-point medium having been heat-exchanged sequentially in the first preheater, the second preheater, the evaporator, and the superheater. In the evaporator and the first preheater, the low-boiling-point medium and the first heating medium are heat-exchanged. In the superheater and the second preheater, the low-boiling-point medium and the second heating medium are heat-exchanged.

Abstract: In one embodiment, a power generating system includes; a flow dividing unit configured to divide a first heat medium supplied thereto to a first flow path and a second flow path; and a heat accumulating unit configured to accumulate the first heat medium sent thereto via the second flow path and deliver the first heat medium at a temporally leveled flow rate. The system further includes: a heat exchanging unit configured to transfer heat from the first heat medium sent thereto via the first flow path and the first heat medium delivered thereto from the heat accumulating unit, to a second heat medium that is lower in boiling point than the first heat medium; and a turbine configured to rotationally move with the second heat medium to which heat has been transferred by the heat exchanging unit.

Abstract: A non-aqueous electrolyte secondary battery including: an electrode group in which a positive electrode and a negative electrode are spirally wound with a separator interposed therebetween; and a non-aqueous electrolyte including a non-aqueous solvent and a lithium salt dissolved in the non-aqueous solvent, the positive electrode including a positive electrode material mixture layer containing a nickel-containing lithium composite metal oxide, wherein a product of A and B equals 150 to 350, A equals 15 to 20%, and B equals 10 to 25%, where A (%) represents a porosity of the positive electrode material mixture layer, and B (%) represents a volume percentage of ethylene carbonate in the non-aqueous solvent.

Abstract: A non-aqueous electrolyte secondary battery including: an electrode group in which a positive electrode and a negative electrode are spirally wound with a separator interposed therebetween; and a non-aqueous electrolyte including a non-aqueous solvent and a lithium salt dissolved in the non-aqueous solvent, the positive electrode including a positive electrode material mixture layer containing a nickel-containing lithium composite metal oxide, wherein a product of A and B equals 150 to 350, A equals 15 to 20%, and B equals 8 to 25%, where A (%) represents a porosity of the positive electrode material mixture layer, and B (%) represents a volume percentage of ethylene carbonate in the non-aqueous solvent.

Abstract: A charge control circuit including a voltage detection section which detects a terminal voltage of a secondary battery; a primary charge processing section which performs a charge processing of acquiring, as a first terminal voltage, a terminal voltage detected by the voltage detection section while causing a charging section to charge the secondary battery; a charging suspend voltage acquiring section which causes the charging section to suspend the charge after the first terminal voltage has been acquired by the primary charge processing section, and acquires, as a second terminal voltage, a terminal voltage detected by the voltage detection section in a state that the charge is suspended; and a charging end determining section which determines whether or not the charge of the secondary battery is to be terminated.

Abstract: A low alloy steel ingot contains from 0.15 to 0.30% of C, from 0.03 to 0.2% of Si, from 0.5 to 2.0% of Mn, from 0.1 to 1.3% of Ni, from 1.5 to 3.5% of Cr, from 0.1 to 1.0% of Mo, and more than 0.15 to 0.35% of V, and optionally Ni, with a balance being Fe and unavoidable impurities. Performing quality heat treatment including a quenching step and a tempering step to the low alloy steel ingot to obtain a material, which has a grain size number of from 3 to 7 and is free from pro-eutectoid ferrite in a metallographic structure thereof, and which has a tensile strength of from 760 to 860 MPa and a fracture appearance transition temperature of not higher than 40 ° C.

Abstract: Provided is a deterioration determination circuit configured by including: an SOC detection unit for detecting an SOC of a secondary battery; an internal resistance detection unit for detecting an internal resistance value of the secondary battery; a first determination unit for determining the status of deterioration of the secondary battery based on the internal resistance value detected by the internal resistance detection unit when the SOC detected by the SOC detection unit is within a range of a pre-set first range; a second determination unit for determining the status of deterioration of the secondary battery based on the internal resistance value detected by the internal resistance detection unit when the SOC detected by the SOC detection unit is within a range of a pre-set second range as a range of an SOC, in which a variation of the internal resistance of the second battery in relation to a variation of the SOC of the secondary battery is different from the first range; and a final determination un

Abstract: A secondary-battery life estimation apparatus includes: a voltage measuring portion measuring a terminal voltage of a secondary battery to be measured; a first memory storing in advance a terminal voltage V0 of a non-degraded secondary battery before the non-degraded secondary battery discharges after fully charged; a second memory which stores in advance a life-estimation data map as a look-up table associating a voltage difference dV between a terminal voltage V of the secondary battery to be measured before the secondary battery to be measured discharges after fully charged and the terminal voltage V0 with a residual life of the secondary battery to be measured; and a CPU calculating the voltage difference dV between the terminal voltage V measured by the voltage measuring portion before the secondary battery to be measured discharges after fully charged and the terminal voltage V0 stored in the first memory and estimating the residual life of the secondary battery to be measured based on the life-estimati

Abstract: A lithium-containing composite oxide represented by the formula 1: LixNi1-y-z-v-wCoyAlzM1vM2wO2 is used as a positive electrode active material for a non-aqueous electrolyte secondary battery. The element M1 is at least one selected from the group consisting of Mn, Ti, Y, Nb, Mo, and W. The element M2 includes at least two selected from the group consisting of Mg, Ca, Sr, and Ba, and the element M2 includes at least Mg and Ca. The formula 1 satisfies 0.97?x?1.1, 0.05?y?0.35, 0.005?z?0.1, 0.0001?v?0.05, and 0.0001?w?0.05. The primary particles have a mean particle size of 0.1 ?m or more and 3 ?m or less, and the secondary particles have a mean particle size of 8 ?m or more and 20 ?m or less.

Abstract: A power supply system for portable equipment has a lithium-ion secondary battery as a power supply, a temperature detection portion for detecting a temperature of the power supply, a voltage detection portion for detecting a voltage of the power supply, a memory portion, and a forced discharge portion. The memory portion stores a control operating temperature, a control operating voltage and a control termination voltage. The forced discharge portion recognizes an abnormality of the power supply when the temperature of the power supply is at least the control operating temperature and the voltage of the power supply is at least the control operating voltage. Then, the forced discharge portion electrifies the notification portion and makes it inform a message indicating that the abnormality is being avoided. The forced discharge portion forcedly discharges the power supply until the voltage of the power supply reaches the control termination voltage.