Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Plural cells
Patent
1993-07-08
1995-03-28
Willis, Jr., Prince
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Plural cells
429162, 429163, 429178, H01M 226
Patent
active
054015952
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Technical Field
This invention relates to a film type battery and a layer-built film type battery. The battery of the invention is useful, for example, in an ID card, a portable telephone, a memory card, a pocket bell, or an electric automobile etc.
2. Background Art
A conventional film type battery is shown in FIG. 27. The conventional film type battery included a sealing agent 2 put around a generating element 1 formed by laminating a positive active material, an electrolyte and a negative active material into a layer structure. A positive current collector plate 3 and a negative current collector plate 4 were disposed above and below the generating element 1, and the generating element 1 was then sealed with both current collector plates 3 and 4 bonded by the sealing agent 2. Terminals 5 were formed by leaving the surfaces of selected corners of both current collector plates 3 and 4 as they were and covering the remaining surfaces by synthetic resin or the like.
Such a film type battery was used also as a layer-built film type battery by being laminated in plural layers as shown by FIG. 28.
However, the internal temperature of the film type battery having the foregoing structure sometimes rises resulting in fire or, in the worst case, bursting, when its power consumption becomes large. This defect is also found in the layer-built film type battery having the foregoing structure.
SUMMARY OF THE INVENTION
An object of this invention is to provide a film type battery and a layer-built film type battery which can be prevented from undergoing a rise in its internal temperature and from catching fire, or even bursting, when power consumption becomes large.
A film type battery is assembled in such a way that a positive current collector plate, a positive active material, electrolytes, a negative active material and a negative current collector plate are laminated into a layer structure, both active materials and the electrolytes are sealed at their peripheries, and both current collector plates are integrated by sealing agents; portions of the respective current collector plates are left free of the active materials, the electrolytes and the sealing agents and terminal pieces are fitted to one side of respective current collector plates.
A first layer-built film type battery is assembled in such a way that a positive active material, electrolytes and a negative active material are laminated into a layer structure to form a generating element, plural generating elements are laminated with positive current collector plates or negative current collector plates put between them, both active materials and the electrolytes are sealed at their peripheries, and both current collector plates are integrated by sealing agents; portions of the respective current collector plates are left free of the active materials, the electrolytes and the sealing agents, terminal pieces are fitted to one side of respective current collector plates, and all of the terminal pieces for the positive current collector plates are joined to each other and all of the terminal pieces for the negative current collector plates are joined to each other, respectively.
A second layer-built film type battery is assembled in such a way that a positive active material, electrolytes and a negative active material are laminated into a layer structure to form a generating element, plural generating elements are laminated with positive current collector plates or negative current collector plates put between them, both active materials and the electrolytes are sealed at their peripheries and both current collector plates are integrated by sealing agents; portions of the respective current collector plates are left free of the active materials, the electrolytes and the sealing agents, the generating elements provided with the both current collectors are laminated with frame members forming ventilating spaces placed between predetermined numbers of generating elements, terminal pieces are fitted to one side of respective cu
REFERENCES:
patent: 4028479 (1977-06-01), Fanciullo et al.
patent: 5230967 (1993-07-01), Radmoll
Kagawa Hiroshi
Kato Shiro
Murata Kazuo
Nuzzolillo M.
Willis Jr. Prince
Yuasa Corporation
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