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AssigneeToshiba Battery Co., Ltd.
InventorsMasami Suzuki, Muneto Hayami, Kazuo Udagawa, Kazuo Iizuka, Naomi Ishihara, Satoshi Hirahara, Hirotaka Sakai, Kiyoto Yoda, Masataka Shikota
Estimating the term…
A non-aqueous electrolyte secondary cell containing an electricity-generating element with at least a cathode, a separator and an anode and a non-aqueous electrolyte inside a cathode case, electrode units each consisting of the cathode and the anode opposite to each another via the separator laminated to form an electrode group, or an electrode unit in a sheet form consisting of the cathode and the anode opposite to each another via the separator wound to form an electrode group, or a sheet-shape cathode wrapped with the separator except for a part contacting at inner face of cathode case and a sheet-shaped anode set on the sheet-shaped cathode in a right angled position each other and bent alternately to form an electrode group, and the total sum of the areas of the opposing cathode and anode in the electrode group larger than the area of the opening of an insulating gasket in a sealed portion in the cathode case or than the area of an opening in a sealed plate in a sealed portion in the cathode case.
A flat non-aqueous electrolyte secondary cell comprising a metallic anode case also serving as an anode terminal and a metallic cathode case also serving as a cathode terminal fit to each other via an insulating gasket, the anode or cathode case having an opening-sealed structure caulked by caulking and having in the inside thereof an electricity-generating element including at least a cathode, a separator and an anode and a non-aqueous electrolyte, wherein a sheet-shape cathode is wrapped with a separator except for in a part contacting at inner face of cathode case, a sheet-shape anode is settled on the above sheet-shape cathode at right angles each other, and they are bent alternately to form an electrode group, and the total sum of the areas of the opposing cathode and anode in this electrode group is larger than the area of the opening of said insulating gasket.
A flat non-aqueous electrolyte secondary cell comprising a metallic cell case also serving as an electrode terminal, an opening-sealing plate for sealing an opening in said cell case, and another electrode terminal arranged via an insulator in an opening provided in a part of the opening-sealing plate, said cell case being provided inside with an electricity-generating element including at least a cathode, a separator and an anode and a non-aqueous electrolyte, wherein an electrode group consisting of an electrode unit having the cathode and the anode opposite to each other via the separator is formed, and the total sum of the areas of the opposing cathode and anode in this electrode group is larger than the area of the opening of said opening-sealing plate.
Dependencies are inferred from the claim text.