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US 12,689,065 B2Granted
Electrode assembly and secondary battery including the same
AssigneeLG Energy Solution, Ltd.
InventorsJin Soo Kim, Hyoung Kwon Kim
Life of this patent
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Abstract
An electrode assembly includes a first electrode; a second electrode; a separation membrane interposed between the first electrode and the second electrode, in which the first electrode, the second electrode, and the separation membrane are wound together to form a jelly-roll structure; and an auxiliary separation membrane disposed between the first electrode and the separation membrane in a center of the jelly-roll structure.
Claims14
An electrode assembly, comprising:
- a first electrode;
- a second electrode;
- a first separation membrane interposed between the first electrode and the second electrode, wherein the first electrode, the second electrode, and the first separation membrane are wound together to form a jelly-roll structure;
- and
- an auxiliary separation membrane disposed between the first electrode and the first separation membrane in a center of the jelly-roll structure,
- wherein the auxiliary separation membrane is a separate membrane stacked on the first separation membrane to overlap an end of the first electrode at the center of the jelly-roll structure without extending beyond the first separation membrane, and
- wherein each of the first separation membrane and the auxiliary separation membrane includes a base layer and a coating layer.
4 more elements
An electrode assembly, comprising:
- a first electrode;
- a second electrode;
- a first separation membrane interposed between the first electrode and the second electrode, wherein the first electrode, the second electrode, and the first separation membrane are wound together to form a jelly-roll structure;
- and
- an auxiliary separation membrane disposed between the first electrode and the first separation membrane in a center of the jelly-roll structure,
- wherein:
- the auxiliary separation membrane is extended from the first separation membrane and is formed integrally with the first separation membrane,
- the integrally formed first separation membrane and auxiliary separation membrane includes a separation membrane region disposed between the first electrode and the second electrode, and an auxiliary separation membrane region disposed between the separation membrane region and the first electrode,
- the integrally formed first separation membrane and auxiliary separation membrane includes a base layer, a first coating layer located on a first surface of the base layer in the separation membrane region, and a second coating layer located on a second surface of the base layer in the auxiliary separation membrane region, and
- the first and second surfaces are opposite to each other.
7 more elements
Dependencies are inferred from the claim text.