Sanyo Electric Co., Ltd.

Shinichi Mitsubori

Kengo Ishibashi

Shinobu Terauchi

Tetsuji Omura

Koji Fujinaga

A battery system includes: a battery stack including a plurality of rectangular battery cells that are stacked; end plate placed at both ends of the battery stack; and a binding bar that connects the end plates to fix the battery stack in a compressed state. End plate includes plates placed on both surfaces and plate-shaped block laminated between plates; plates include outer plate and inner plate; plate-shaped block includes dual-side blocks placed on both sides so as to be separated from each other and intermediate block placed in tapered groove between dual-side blocks; the tapered groove has a taper shape that gradually increases in width from an outside to an inside of the end plate. The intermediate block is placed in facing surfaces of the tapered groove in a slidable manner; the dual-side blocks are fixed to the plates; and intermediate block pressed by battery stack is press-fitted into tapered groove and end plate applies tensile stress to outer plate and inner plate via dual-side blocks.

Battery system, vehicle including battery system, and power storage device

A pair of end plates of a battery module are disposed respectively at end faces of a battery stack. Each of the end plates includes a first metal sheet, a second metal sheet, and a metal rod. The first metal sheet includes a plate part corresponding to a shape of each of the end faces of the battery stack, and a bent side piece provided at each of widthwise sides of the plate part. The second metal sheet includes a parallel plate part stacked on and fixed to the plate part of the first metal sheet, and a bending ridge that connects with each of sides of the parallel plate part and extends along widths of the end plates. A tubular reinforcement is defined on an inner side of the bending ridge. A metal rod is disposed in the tubular reinforcement and has ends connected to the bind bar.

Battery module, and vehicle equipped with same

A battery module includes a battery stack that includes a plurality of prismatic battery cells stacked in a direction along their thicknesses, the pair of end plates disposed respectively at end faces of the battery stack that face in a stacked direction, bind bars that are disposed respectively on side faces of the battery stack and bind the pair of end plates together, and a plurality of securing pins fixing the bind bars over sides of each of the end plates. A pair of the plurality of securing pins are fixed respectively to the sides of each of the end plate to face each other and are coaxial with each other. Each of the end plate includes a horizontal rib extending coaxially with each of the plurality of securing pins.

Battery module and vehicle equipped with same

Power source device includes a battery block, a plate, terminal fixing part, and buffer portion. The battery block includes a battery cell having electrode terminals. The battery block has a terminal surface on which electrode terminals are positioned. The plate is disposed on the terminal surface. The plate includes output terminal portion provided with general terminal bus-bar connected to one of electrode terminals. Output terminal portion has wall portion standing along general terminal bus-bar. Terminal fixing part connects the output line (OL) having a connection terminal (CT) at a tip thereof to general terminal bus-bar. Terminal fixing part fixes the connection terminal (CT) and the general terminal bus-bar to each other by a screwing structure. Buffer portion is formed so as to be deformable between the connection terminal (CT) and wall portion.

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Kanagawa, Japan

Shinichi Mitsubori