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公开(公告)号：EP1793436A4
公开(公告)日：2009-04-15
申请号：EP05768917
申请日：2005-08-05
Applicant: NEC CORP
Inventor： OTOHATA MAKIHIRO , YAGETA HIROSHI
CPC classification number: H01G9/08 , H01G2/08 , H01G2/103 , H01G9/12 , H01G11/80 , H01M2/021 , H01M2/0287 , H01M2/06 , H01M2/1229 , Y02E60/13
Abstract: A releasing pressure and a pressure releasing position, when enclosing films are expanded by gas produced at an abnormal time, are easily and positively configured. A film-enclosed battery (1) has a battery element (2) and two enclosing films (4, 5) for sealing the battery element (2). The enclosing films (4, 5) include heat-sealable resin layers and air-impermeable layers, and the heat-sealable resin layers and air-impermeable layers, and the heat-sealable resin layers that are face each other hold the battery element (2) and seal the battery element (2) when their peripheral edges are thermally fused. A cross-linking structure (8) formed by cross-linking heat-sealable resin layer is formed in one of the enclosing films (4, 5) so that a region in part of a heat-sealed area (6) has a position exposed to a battery element housing unit and another portion in contact with outside air.
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2.发明公开PACKAGED BATTERY, STACKED BATTERY ASSEMBLY, AND FILM-COVERED BATTERY 有权GEKAPSELTE BATTERIE，GESTAPELTE BATTERIEBAUGRUPPE UND MIT FILM BEDECKTE BATTERIE
公开(公告)号：EP2131413A4
公开(公告)日：2010-08-04
申请号：EP08702968
申请日：2008-01-09
Applicant: NEC CORP
Inventor： MIZUTA MASATOMO , UTSUMI KAZUAKI , OTOHATA MAKIHIRO , YAGETA HIROSHI
CPC classification number: H01M2/1241 , H01M2/0275 , H01M2/08 , H01M2/1061 , H01M2/1229 , H01M2/345
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3.发明公开
公开(公告)号：EP1739766A4
公开(公告)日：2010-07-28
申请号：EP05720462
申请日：2005-03-10
Applicant: NEC CORP
Inventor： YAGETA HIROSHI , OTOHATA MAKIHIRO
IPC: H01M2/02 , H01G2/10 , H01G9/00 , H01G9/08 , H01M10/0525 , H01M10/058 , H01M10/36
CPC classification number: H01G2/10 , H01G9/08 , H01M2/0207 , H01M2/021 , H01M2/0212 , H01M2/0287 , H01M2/0404 , H01M10/0525 , H01M10/058 , Y10T29/4911 , Y10T29/49112
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公开(公告)号：EP2477255A4
公开(公告)日：2014-03-26
申请号：EP09849157
申请日：2009-09-10
Applicant: NEC ENERGY DEVICES LTD , NEC CORP
Inventor： YAGETA HIROSHI , KUMEUCHI TOMOKAZU , DAIDOJI TAKAO
CPC classification number: H01M2/1673 , H01M2/18 , H01M2/347 , H01M4/13 , H01M10/0413 , H01M10/0418 , H01M10/0459 , H01M10/052 , H01M10/0583 , Y10T29/49108
Abstract: A stacked battery includes a square battery element in which a tabular positive electrode, a separator and a tabular negative electrode are laminated, wherein: one side of the battery element is a terminal connection section pulled-out surface, which is provided on both the positive and negative electrodes and where a plate-like positive-electrode terminal connection section and a plate-like negative-electrode terminal connection are both pulled out; projection surfaces, which are generated by vertically projecting the positive-electrode terminal connection section and the negative-electrode terminal connection section onto surfaces extending from the positive and negative electrodes, do not cross each other; a surface of the positive electrode and a surface of the negative electrode, which are facing each other, are different in area; each electrode is disposed so that an entire projection portion, which is generated by projecting the small-area electrode onto a surface of a large-area electrode that faces the small-area electrode, is positioned on the large-area electrode; on a separator, a bumping section is provided to limit movements of positive and negative electrodes as a positive-electrode end surface and a negative-electrode end surface hit the bumping section; and as for the bumping section, separators are joined by a crease or joining section of adjacent separators among separators disposed on electrode surfaces.
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公开(公告)号：EP1686636A4
公开(公告)日：2009-04-22
申请号：EP04788392
申请日：2004-09-30
Applicant: NEC CORP
Inventor： OTOHATA MAKIHIRO , YAGETA HIROSHI
IPC: H01M2/02 , B29C53/04 , B29C53/06 , B29C59/00 , B29C65/00 , B29C65/02 , H01G9/08 , H01G11/00 , H01G11/12 , H01G11/66 , H01G11/74 , H01G11/78 , H01G11/80 , H01G11/84 , H01M2/08
CPC classification number: H01M2/08 , B29C53/063 , B29C59/007 , B29C65/02 , B29C65/08 , B29C66/0324 , B29C66/1122 , B29C66/433 , B29C66/4332 , B29C66/72321 , B29C66/7234 , B29C66/80 , B29C66/83221 , B29L2009/00 , B29L2031/7146 , H01G9/08 , H01G13/003 , H01M2/021 , H01M2/0212 , H01M2/0267 , H01M2/0275 , H01M2/0287 , Y10T29/49108 , Y10T29/4911
Abstract: A joint section where the clad body films (2a, 2b) of a film-clad battery (1) are thermally fused together is formed with a flat surface (6’) having thickness (t1) and a groove (6) having thickness (t2). The groove (6) serves to reduce the projection area of the film-clad battery (1) by folding a side (2c) toward a receiving section (2a1) with the groove (6) serving as an edge, and the groove (6) is made thinner than the flat surface (6’) by Δt=t1-t2. Therefore, the elongation of clad body films (2a, 2b) produced on the outer side (6a) is reduced as compared with the case of folding the portion with thickness (t1).
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公开(公告)号：EP1667251A4
公开(公告)日：2009-04-15
申请号：EP04771011
申请日：2004-07-29
Applicant: NEC CORP
Inventor： OTOHATA MAKIHIRO , YAGETA HIROSHI
CPC classification number: H01M2/021 , H01G9/016 , H01G9/10 , H01G9/155 , H01G11/74 , H01G11/80 , H01G11/84 , H01M2/0275 , H01M2/0287 , H01M2002/0297 , Y02E60/13 , Y10T29/4911
Abstract: A coated-with-film cell (1) includes a cell element (6) and laminate films (3, 4) for sealing the cell element (6). Each of the laminate films (3, 4) consists of a thermally melting/attaching resin layer and a metal thin film layer. The thermally melting/attaching resin layers are arranged inside when sandwiching the cell element (6) by the films, and the sealing regions (3a, 4a) of the peripheral portion are thermally melted/attached, thereby sealing the cell element (6). The regions of the laminate films (3, 4) excluding the sealing regions (3a, 4a) are electronic ray-irradiated regions (3b, 4b) which have been subjected to irradiation of electronic rays. In the electronic ray-irradiated regions (3b, 4b), a bridge structure is formed in the thermally melting/attaching layers by the irradiation of electronic rays.
