Abstract: A battery safety evaluation apparatus as an aspect of the present invention includes an estimator, a calculator, and an evaluator. The estimator estimates an estimation value of an inner state parameter of a battery to be evaluated on the basis of data of its voltage and current measured in charging or discharging it. The calculator calculates an index regarding swelling risk of the battery on the basis of first reference data. The evaluator evaluates, on the basis of the index, a battery swelling risk of the battery to evaluate safety of the battery. The battery is a secondary battery. The first reference data is reference data considered to correspond to the battery from the reference data on the basis of estimation value. The reference data indicates at least one of relationships between a positive electrode capacity, a negative electrode capacity and an SOC deviation of a secondary battery.

Abstract: According to one embodiment, a secondary battery system includes a secondary battery, a first measurement part, a designation part, and a controller. The first measurement part measures a volume change of the secondary battery. The designation part designates a threshold value. The controller controls a current flowing through the secondary battery, based on the volume change of the secondary battery measured by the first measurement part and the threshold value.

Abstract: A battery safety evaluation apparatus according to one aspect of the present invention includes a battery characteristic estimator, a heat amount estimator and safety index calculator. The battery characteristic estimator estimates an estimation value of an inner state parameter of a first battery on the basis of data on voltage and current of the first battery measured in charging or discharging. The heat amount estimator estimates a heat amount of the first battery upon change of an external temperature on the basis of first reference data which is at least indicating relationship between a heat amount of a secondary battery and the external temperature and is set to correspond to the first battery on the basis of the estimation value. The safety index calculator calculates a safety index regarding a temperature of the first battery upon change of the external temperature on the basis of the estimated heat amount.

Abstract: A charge/discharge control apparatus according to one aspect of the present invention is an apparatus that controls charge or discharge of a secondary battery to be charged or discharged on the basis of at least one condition of use calculated from a deterioration model or a deterioration map of a secondary battery and at least one inner state parameter of the secondary battery to be charged or discharged. The charge/discharge control apparatus updates the condition of use on the basis of change of the inner state parameter.

Abstract: A charge control apparatus according to an embodiment controls charge of a secondary battery to be charged, on the basis of a charge pattern which is calculated from inner state parameters of the secondary battery to be charged, and of a deterioration model or deterioration map of a secondary battery. The charge control apparatus updates the charge pattern on the basis of change of the inner state parameters.

Abstract: A storage battery controlling device according to an embodiment of the present invention includes: a battery characteristic estimator configured to calculate an internal resistance of a secondary battery and a function indicating relationship between an open circuit voltage of the secondary battery and a state of charge or an amount of a charge charged of the secondary battery therein, on the basis of data of a temperature, a voltage and a current of the secondary battery which are measured in charging or discharging the secondary battery; and an input/output performance value calculator configured to calculate an inputtable/outputtable power amount of the secondary battery on the basis of the internal resistance and the function calculated by the battery characteristic estimator.

Abstract: A storage battery evaluation device according to an embodiment of the present invention includes a processor configured to execute a program to provide at least a battery characteristic estimator and a deterioration progress calculator. The battery characteristic estimator estimates a battery characteristic including at least one of battery capacity, internal resistance, and open-circuit voltage of a secondary battery on the basis of data of voltage and current of the secondary battery, the data being measured at the time of charging or discharging of the secondary battery. The deterioration progress calculator calculates a deterioration progress representing the progress of deterioration of the secondary battery, on the basis of a value related to a performance index of the secondary battery, the value being calculated on the basis of the battery characteristic.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The negative electrode contains a titanium-containing oxide. The nonaqueous electrolyte contains a compound having a functional group represented by the formula (1) below and a sultone having an unsaturated hydrocarbon group. [Chem.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. At least one of the positive electrode and the negative electrode comprises a current collector made of aluminum or an aluminum alloy and an active material layer laminated on the current collector. The active material layer contains first active material particles having an average particle diameter of 1 ?m or less and a lithium diffusion coefficient of 1×10?9 cm2/sec or less at 20° C., and second active material particles having an average particle diameter of 2 to 50 ?m. A true density of the second active material particles is larger by 0.01 to 2.5 g/cm3 than a true density of the first active material particles.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. At least one of the positive electrode and the negative electrode comprises a current collector made of aluminum or an aluminum alloy and an active material layer laminated on the current collector. The active material layer contains first active material particles having an average particle diameter of 1 ?m or less and a lithium diffusion coefficient of 1×10?9 cm2/sec or less at 20° C., and second active material particles having an average particle diameter of 2 to 50 ?m. A true density of the second active material particles is larger by 0.01 to 2.5 g/cm3 than a true density of the first active material particles.

Abstract: A method of producing an electrode including decreasing a yield stress of a slurry containing an active material to two-thirds or less, and applying the slurry to a current collector.

Abstract: A nonaqueous electrolyte battery includes a negative electrode and a nonaqueous electrolyte. The negative electrode comprises an active material having a lithium ion insertion potential of 0.4V (vs Li/Li+) or more, a conductive agent and a current collector. The nonaqueous electrolyte contains first sultones having an unsaturated hydrocarbon group. A diameter distribution of pores of the negative electrode when measured by mercury porosimetry has a first peak having a mode diameter of 0.01 to 0.2 ?m and a second peak having a mode diameter of 0.003 to 0.02 ?m. A volume of pores having a diameter of 0.01 to 0.2 ?m and a volume of pores having a diameter of 0.003 to 0.02 ?m, which are measured by the mercury porosimetery, are 0.05 to 0.5 mL and 0.0001 to 0.02 mL, respectively, per g of the negative electrode excluding the current collector.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. At least one of the positive electrode and the negative electrode comprises a current collector made of aluminum or an aluminum alloy and an active material layer laminated on the current collector. The active material layer contains first active material particles having an average particle diameter of 1 ?m or less and a lithium diffusion coefficient of 1×10?9 cm2/sec or less at 20° C., and second active material particles having an average particle diameter of 2 to 50 ?m. A true density of the second active material particles is larger by 0.01 to 2.5 g/cm3 than a true density of the first active material particles.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode, a separator and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material having a Lithium ion insertion potential of 0.4 V (vs. Li/Li+) or more. The separator is provided between the positive electrode and the negative electrode. The separator has a porosity of 50% or more and a pore diameter distribution in which a median diameter is larger than a mode diameter. The porosity and the pore diameter distribution are measured by mercury porosimetry. A surface roughness of the negative electrode is larger than the mode diameter.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode, a separator and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material having a Lithium ion insertion potential of 0.4 V (vs. Li/Li+) or more. The separator is provided between the positive electrode and the negative electrode. The separator has a porosity of 50% or more and a pore diameter distribution in which a median diameter is larger than a mode diameter. The porosity and the pore diameter distribution are measured by mercury porosimetry. A surface roughness of the negative electrode is larger than the mode diameter.

Abstract: A nonaqueous electrolyte battery includes a negative electrode containing a titanium-containing oxide, a positive electrode, and a nonaqueous electrolyte. The positive electrode includes a lithium-transition metal composite oxide and at least one kind of oxide selected from a group consisting of FePO4, Li3Fe2(PO4)3, LiFeP2O7, Fe4(P2O7)3, Fe2(SO4) 3, and V2O5.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode, a separator and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material having a Lithium ion insertion potential of 0.4 V (vs. Li/Li+) or more. The separator is provided between the positive electrode and the negative electrode. The separator has a porosity of 50% or more and a pore diameter distribution in which a median diameter is larger than a mode diameter. The porosity and the pore diameter distribution are measured by mercury porosimetry. A surface roughness of the negative electrode is larger than the mode diameter.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The negative electrode contains a negative electrode active material. The negative electrode active material has a lithium ion insertion potential of 0.4V (vs. Li/Li+) or higher and a pore diameter distribution in which a median diameter is not smaller than 1 ?m and a mode diameter is not larger than 1/10 of the median diameter. The pore diameter distribution is measured by mercury porosimetry.

Abstract: A nonaqueous electrolyte battery includes a positive electrode, a negative electrode and a nonaqueous electrolyte. The negative electrode contains an intermetallic compound having an La3Co2Sn7 type crystal structure of which alkaline-earth metal atoms occupy La sites. The nonaqueous electrolyte contains at least one of methyl ethyl carbonate and dimethyl carbonate.

Abstract: A nonaqueous electrolyte battery includes a negative electrode and a nonaqueous electrolyte. The negative electrode comprises an active material having a lithium ion insertion potential of 0.4V (vs Li/Li+) or more, a conductive agent and a current collector. The nonaqueous electrolyte contains first sultones having an unsaturated hydrocarbon group. A diameter distribution of pores of the negative electrode when measured by mercury porosimetry has a first peak having a mode diameter of 0.01 to 0.2 ?m and a second peak having a mode diameter of 0.003 to 0.02 ?m. A volume of pores having a diameter of 0.01 to 0.2 ?m and a volume of pores having a diameter of 0.003 to 0.02 ?m, which are measured by the mercury porosimetery, are 0.05 to 0.5 mL and 0.0001 to 0.02 mL, respectively, per g of the negative electrode excluding the current collector.