Lithium ion secondary battery
AssigneeLG Chem, Ltd.
InventorsMyung Ki LEE, Jooyong SONG, Hee Seok JEONG, Ji Hee AHN
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Abstract
A lithium ion secondary battery including a plurality of electrode laminates, each electrode laminate including a positive electrode, a separator, and a negative electrode being alternatively laminated, each positive electrode and negative electrode having respective positive and negative electrode tabs protruding from a respective line segment, the positive electrode tabs of adjacent electrode laminates face each other and are connected to each other to provide a positive electrode tab bundle and the negative electrode tabs of the adjacent electrode laminates face each other and are connected to each other to provide a negative electrode tab bundle.
Claims17
A lithium ion secondary battery comprising:
- first and second electrode laminates, wherein each of the first and second electrode laminates has a structure including a positive electrode, a separator, and a negative electrode, each positive electrode, separator, and negative electrode including a plurality of line segments on a circumferential portion thereof, the positive electrode, the separator, and the negative electrode of each of the first and second electrode laminates are alternatively laminated,
- wherein each of the first and second electrode laminates includes positive electrode tabs protruding from the respective positive electrode and negative electrode tabs protruding from the respective negative electrode, each positive electrode tab and negative electrode tab has a shape protruding from the respective line segment,
- wherein the positive electrode, the separator, and the negative electrode of the first and second electrode laminates are laminated so that the respective line segments face each other,
- wherein the positive electrode tabs of the first and second electrode laminates are laminated to face each other to provide a positive electrode tab bundle,
- wherein the negative electrode tabs of the first and second electrode laminates are laminated to face each other to provide a negative electrode tab bundle,
- wherein the second electrode laminate is connected to a side portion of the first electrode laminate, and
- wherein the first electrode laminate is connected in series or parallel to the second electrode laminate.
A lithium ion secondary battery comprising:
- first, second, and third electrode laminates, each of the first, second and third electrode laminates has a structure including a positive electrode, a separator, and a negative electrode, wherein the positive electrode, separator, and negative electrode of each of the first, second, and third electrode laminates are alternately laminated,
- wherein each of the first and second electrode laminates has a regular polygonal pillar shape and each respective one of the positive electrode, the separator, and the negative electrode has a regular polygonal shape with one internal angle having an aliquot part of 360 degrees,
- wherein the second electrode laminate includes a first side plane and a second side plane, disposed on side portions of the second electrode laminate and are adjacent to each other,
- wherein the first side plane of the second electrode laminate faces and overlaps one side plane of the first electrode laminate,
- wherein the second side plane of the second electrode laminate faces and overlaps one side plane of the third electrode laminate, and
- wherein the second electrode laminate is connected in series or parallel to the first and third electrode laminates.
Dependencies are inferred from the claim text.