Denso Corporation

Adeka Corporation

Inter-university Research Institute Corporation National Institutes of Natural Sciences

Kouhei Yamamoto

Manabu Yamada

Takayuki Taki

Hisashi Umemoto

Yoshimitsu Inoue

Hiroaki Watanabe

Masaki Uchiyama

Satoru Suzuki

Takahiro Souki

Norikazu Adachi

Tetsuya Goto

Nobuyuki Nishi

Atsuki Shibuya

Kyohei Usami

Yuyu Ohnuma

Atsuo Tomita

Kouhei Yamaguchi

Shigenori Numao

Yasuyuki Ooba

Hiroto Asano

Ryuichiro Shinkai

Atsuski Shibuya

A battery pack includes a plurality of battery stacks integrated by stacking a plurality of unit batteries, a fluid passage where fluid flows for cooling the unit batteries disposed between the battery stacks, a blower for circulating the fluid in the fluid passage, and a plurality of heat conducting plates. The heat conducting plate is thermally connected to an outer casing of the unit batteries constituting the battery stacks adjacent to each other, and disposed so as to constitute a plurality of cooled portions of which parts thereof exist in the fluid passage. The battery pack includes a passage forming member that demarcates the fluid passage as an independent passage from the area near the outer casing of the unit battery, and includes a partition wall for supporting the heat conducting plate.

Battery pack

A nonaqueous electrolyte solution for secondary batteries, which maintains small internal resistance and high electrical capacitance in long-term use in a nonaqueous electrolyte secondary battery uses, as an active material, a crystalline carbon material having a high crystallinity, and a negative electrode produced using a polymeric carboxylic compound as a binding agent. The nonaqueous electrolyte solution contains: (A) at least one compound selected from a group consisting of an unsaturated phosphate ester compound represented by a general formula (1) and an unsaturated phosphate ester compound represented by a general formula (2); (B) at least one compound selected from a group consisting of a sulfite ester compound, a sulfonate ester compound, an alkali metal imide salt compound, a fluorosilane compound, an organic disilane compound or an organic disiloxane compound; (C) an organic solvent, and (D) an electrolyte salt. A secondary battery using such nonaqueous electrolyte solution is also described.

Nonaqueous electrolyte solution for batteries, and nonaqueous electrolyte secondary battery using same

A negative electrode used for a nonaqueous electrolyte solution battery having nonaqueous electrolyte solution containing lithium ion includes a metal carbon composite material. The metal carbon composite material has a porous carbon material having cavities, and a metal material made of metal to reversibly store or emit lithium ion. The metal material is arranged on a surface of the porous carbon material including inner surfaces of the cavities. The porous carbon material has a mass of 1-65 mass % when the metal carbon composite material is defined to have a mass of 100 mass %.

Negative electrode for nonaqueous electrolyte solution battery and nonaqueous electrolyte solution battery having the same

A nonaqueous electrolyte solution in which an electrolyte salt is dissolved in an organic solvent includes, includes at least one or more compounds selected from the silicon compounds represented by general formula (1), (2), or (3) below: (In the formulae, each of R, R, and Rindependently represents a Calkyl, Calkenyl, Calkynyl, or Caryl group; Rrepresents a Calkylene, Calkenylene, Calkynylene, or Carylene group; and n represents 1 or 2. When n is 1, X represents a fluorine atom, trifluoromethyl group, Calkoxy group, Calkenyloxy group, Caryloxy group, or Cacyloxy group, Csulfonyloxy group, isocyanato group, isothiocyanato group, or cyano group. When n is 2, X represents a Calkylene group, Calkylenedioxy group, Calkenylene group, Calkenylenedioxy group, Calkynylene group, Calkynylenedioxy group, Carylene group, Carylenedioxy group, Cdiacyloxy group, oxygen atom, or direct bond.)

Nonaqueous electrolyte solution and secondary battery using the electrolyte solution

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Inazawa, Japan

Kouhei Yamamoto