Enax, Inc.

Kiyoko Abe

Kazunori Ozawa

Katsumi Kawai

Munehiro Kadowaki

Masashi Akiba

Taro Ueno

Yasunori Ozawa

Disclosed is a sheet-type secondary battery having: a laminated sheath () including an inner layer () made of a thermoplastic resin and a metal layer (); and electrode terminals (), each of which is connected electrically to an internal electrode pair () and passes through a heat seal portion () of the laminated sheath () in a hermetic manner so as to be led out externally. The sheath () and electrode terminal () are bonded with a bonding resin () at portion () in which terminal () is interposed. The inner layer () of the sheath () opposed to the terminal () has an excess resin receiving portion () formed thereon for receiving an excess resin in a heat sealing process. The portion () is not formed in a heat seal portion (P) at which the inner layers () of the laminated sheaths () are bonded.

Sheet-type secondary battery and method of manufacturing same

There is provided a simple-structured and inexpensive device for stacking a successive separator and sheet electrodes which can protect an end portion of a sheet electrode when folding the successive separator, and which enables smooth folding of the separator to improve the productivity. The device comprises a stacking stagewhich adsorbs and holds a leading end of the tape-like separator S, and on which sheet electrodes P, N and the separator S are successively stacked, separator reciprocating means for reciprocating the tape-like separator S on the stacking stagewith the stacking stagebeing as a center, and a folding guide memberwhich comes close/moves apart relative to the stacking stage, covers both side ends of the stacked sheet electrode P, N in the moving direction of the separator S, and guides folding of the separator S accompanied by a reciprocal movement of the separator S at both side ends of the sheet electrode.

Device for stacking successive separator and sheet electrode

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Yonezawa, Japan

Kiyoko Abe