Pouch type lithium secondary battery and method of fabricating the same
AssigneeSamsung SDI Co., Ltd.
InventorHyung Bok Lee
Life of this patent
Estimating the term…
Abstract
A pouch type lithium secondary battery includes an electrode assembly including a first electrode plate connected to a first electrode tap, a second electrode plate connected to a second electrode tap, and a separator interposed between the first and second electrode plates. The battery also includes a pouch exterior having an electrode assembly storing portion and at least a wing portion extending from at least an end of the electrode assembly storing portion, the wing portion entirely winding around side faces of the electrode assembly storing portion. A method of fabricating a pouch type lithium secondary battery is also disclosed.
Claims18
A pouch type lithium secondary battery comprising:
- an electrode assembly comprising a first electrode plate connected to a first electrode tap, a second electrode plate connected to a second electrode tap, and a separator between the first electrode plate and the second electrode plate;
- and
- a pouch housing the electrode assembly in an electrode assembly storing portion, the electrode assembly storing portion having a bottom surface, a pair of side faces and a wing portion comprising a front plate and a rear plate extending from at least an end of the electrode assembly storing portion, wherein both the front plate and the rear plate of the wing portion wind entirely around the bottom surface and the pair of side faces of the electrode assembly storing portion.
A method of fabricating a pouch type lithium secondary battery, comprising:
- preparing a pouch including a front plate and a rear plate foldable along a folding line, the rear plate having an electrode assembly storing space comprising a bottom surface and a pair of side faces;
- storing an electrode assembly in the electrode assembly storing space such that the electrode assembly extends substantially parallel to the pair of side faces, the electrode assembly comprising a first electrode plate connected to a first electrode tap, a second electrode plate connected to a second electrode tap, and a separator between the first electrode plate and the second electrode plate;
- forming a pouch bare cell by sealing edges of the front plate and the rear plate of the pouch;
- and
- wrapping the electrode assembly with the front plate and the rear plate such that both the front plate and the rear plate wind entirely around the bottom surface and the pair of side faces of the electrode assembly storing space.
Dependencies are inferred from the claim text.