Jelly-roll type electrode assembly and lithium secondary battery with the same
First Claim
1. A jelly-roll type electrode assembly comprising:
- a first electrode plate;
a second electrode plate; and
a separator interposed between the first and second electrode plates so as to insulate the first electrode plate from the second electrode plate, wherein the separator includes an upper section that protrudes by an upper protruding width from an upper portion of the first and second electrode plates and a lower section that protrudes by a lower protruding width from a lower portion of the first and second electrode plates and wherein the upper protruding width is different from the lower protruding width.
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Accused Products
Abstract
An electrode assembly and a lithium secondary battery with the electrode assembly improve reliability and stability of the lithium secondary battery by protecting the lithium secondary battery from external impact applied thereto when a user drops the lithium secondary battery onto the ground. The electrode assembly includes a first electrode plate, a second electrode plate, and a separator interposed between the first and second electrodes so as to insulate the first electrode plate from the second electrode plate. A protruding width of an upper section of the separator, which protrudes upward from the first and second electrodes, is greater than a protruding width of a lower section of the separator, which protrudes downward from the first and second electrodes.
28 Citations
18 Claims
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1. A jelly-roll type electrode assembly comprising:
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a first electrode plate;
a second electrode plate; and
a separator interposed between the first and second electrode plates so as to insulate the first electrode plate from the second electrode plate, wherein the separator includes an upper section that protrudes by an upper protruding width from an upper portion of the first and second electrode plates and a lower section that protrudes by a lower protruding width from a lower portion of the first and second electrode plates and wherein the upper protruding width is different from the lower protruding width. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A jelly-roll type electrode assembly comprising:
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a first electrode plate;
a second electrode plate; and
a separator interposed between the first and second electrode plates so as to insulate the first electrode plate from the second electrode plate, wherein the separator includes an upper section that protrudes by an upper protruding width from an upper portion of the first and second electrode plates and a lower section that protrudes by a lower protruding width from a lower portion of the first and second electrode plates and wherein the upper protruding width is greater than the lower protruding width, and wherein the upper protruding width of the separator is in a range of 2 to 4% with respect to a total width of the separator. - View Dependent Claims (8, 9, 10)
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11. A secondary battery comprising:
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a jelly-roll type electrode assembly including a first electrode plate, a second electrode plate, and a separator interposed between the first and second electrodes so as to insulate the first electrode plate from the second electrode plate, the separator includes an upper section that protrudes by an upper protruding width from an upper portion of the first and second electrode plates and a lower section that protrudes by a lower protruding width from a lower portion of the first and second electrode plates and wherein the upper protruding width is different from the lower protruding width; and
a case that receives the electrode assembly therein. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification