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US 2002/0119367 A1Published application
Lamination type secondary battery
AssigneeNEC Mobile Energy Corporation
InventorsHideto Watanabe, Katsuichi Mogami, Eiko Motegi
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AssigneeNEC Mobile Energy Corporation
InventorsHideto Watanabe, Katsuichi Mogami, Eiko Motegi
Estimating the term…
The present invention provides a lamination type secondary battery, in which accurate positioning can be performed for positive electrodes and negative electrodes arranged face-to-face to each other. The invention provides a lamination type secondary battery, which comprises positive electrodes and negative electrodes having different surface areas, said positive electrodes and said negative electrodes being laminated on each other with a separator between them, each of the electrodes having smaller surface area is arranged at the center with equal spacing from outer periphery of a separator main body and is covered with the separator main body, and outer periphery of each of the electrodes having larger surface area is equal in size with outer periphery of the separator main body to cover the electrode having smaller surface area.
A lamination type secondary battery, comprising positive electrodes and negative electrodes having different surface areas, said positive electrodes and said negative electrodes being laminated face-to-face with a separator therebetween, each of the electrodes having smaller surface area is covered with a separator main body and arranged at the center and positioned with equal spacing from outer periphery of the separator main body, and outer periphery of the electrode having larger surface area has a size equal to the size of outer periphery of the separator main body to cover the electrode having smaller surface area.
Dependencies are inferred from the claim text.