Patent ID: 7858240

Claim:
An electrode assembly comprising: a positive electrode plate including a positive electrode coating portion and a positive electrode non-coating portion, a positive electrode active material coated on at least one side of the positive electrode coating portion; a negative electrode plate including a negative electrode coating portion and a negative electrode non-coating portion, a negative electrode active material coated on at least one side of the negative electrode coating portion; a separator interposed between the positive electrode plate and the negative electrode plate to insulate the positive electrode plate from the negative electrode plate; a positive electrode tab including a positive electrode tab protrusion and a positive electrode tab body, the positive electrode tab protrusion protruding out of the positive electrode plate along a first direction, the positive electrode tab body coupled to the positive electrode non-coating portion; a negative electrode tab including a negative electrode tab protrusion and a negative electrode tab body, the negative electrode tab protrusion protruding out of the negative electrode plate along the first direction, the negative electrode tab body coupled to the negative electrode non-coating portion; a positive insulation member formed on the positive electrode tab covering an interface between the positive electrode tab protrusion and the positive electrode tab body, the positive insulation member including a positive insulation wide portion and a positive insulation narrow portion, the positive insulation wide portion covering a portion of the positive electrode tab protrusion, a width of the positive insulation wide portion being greater than a width of the positive insulation narrow portion; and a negative insulation member formed on the negative electrode tab covering an interface between the negative electrode tab protrusion and the negative electrode tab body, the negative insulation member including a negative insulation wide portion and a negative insulation narrow portion, the negative insulation wide portion covering a portion of the negative electrode tab protrusion, a width of the negative insulation wide portion being greater than a width of the negative insulation narrow portion.