Nissan Motor Company Limited

Konica Minolta, Inc.

Haruyuki Saito

Takashi Honda

Kazuki Miyatake

Manabu Kaseda

Hironobu Muramatsu

Hideaki Horie

Takayuki Fujii

Takeshi Tsuda

Shigeo Ibuka

Satoru Ichikawa

Yoshiaki Nitta

Yasuyuki Tanaka

Tamaki Hirai

Hiroaki Tanizaki

Chizuru Matsuyama

Tomoya Kubota

Yukinari Kato

Etsuko Futaya

Keisuke Shimamoto

Kana Sato

Each time the charging of an electric vehicle is executed at a charging station, charging information is acquired which is information on a charged capacity by one charging or a time required for one charging, and identification information of the electric vehicle is acquired. Each charging time, the acquired charging information and the acquired identification information are stored in an information storage unit so that they are associated with each other. The identification information of an electric vehicle is acquired which is waiting for charging at a charging station as a calculation object for which a charging wait time is calculated. The charging information corresponding to the acquired identification information of the electric vehicle waiting for charging is extracted from the stored charging information. The charging wait time at the charging station as the calculation object is calculated on the basis of the extracted charging information.

Charging wait time calculation system and method

A current collector for a secondary battery () of the present invention includes a resin layer () having electrical conductivity, and an ion barrier layer () provided on the surface of the resin layer (). The ion barrier layer () contains ion trapping particles () in which metal compounds () are provided on the surfaces of metal containing particles (). The ion trapping particles () are continuously provided from an interface () between the resin layer () and the ion barrier layer () toward a surface () of the ion barrier layer (). Thus, the ion barrier layer () prevents from the entry of ions, so that the ion adsorption in the current collector () can be decreased.

Current collector for secondary battery and secondary battery using the same

A non-aqueous electrolyte secondary battery (large size cell) that has high output (low resistance) and high capacity makes it possible to improve the cycle characteristics of a battery by controlling the balance of the resistance between positive and negative electrodes. The non-aqueous electrolyte secondary battery has a positive electrode which comprises an active material and a conductive aid, a negative electrode, and an electrolyte layer, and having battery capacity of 3 Ah or more and an absolute value of battery internal resistance of 30 m&#x3a9; or less, in which the non-aqueous electrolyte second battery is characterized in that the zeta (&#x3b6;) potential between the active material and the conductive aid is in the range of 0.3 mV to 2 mV as an absolute value.

Non-aqueous electrolyte secondary battery

A separator with a heat resistant insulation layer includes a porous substrate, and a heat resistant insulation layer formed on one surface or both surfaces of the porous substrate and containing at least one kind of inorganic particles and at least one kind of a binder, wherein a content mass ratio of the inorganic particles to the binder in the heat resistant insulation layer is in a range from 99:1 to 85:15, a BET specific surface area of the inorganic particles is in a range from 3 m/g to 50 m/g, and a ratio of the moisture content per mass of the binder to the BET specific surface area of the inorganic particles is greater than 0.0001 and smaller than 2.

Separator with heat resistant insulation layer

A separator for an electric device includes a porous substrate layer and first and second ceramic layers formed on the respective surfaces of the porous substrate layer and each containing ceramic particles and a binder. A specific surface area of the first ceramic layer is smaller than a specific surface area of the second ceramic layer, and the first ceramic layer is located towards a negative electrode of an electric device.

Separator for electric device and electric device using the same

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Yokohama, Japan

Haruyuki Saito