Electrode Assembly, Secondary Battery and Method for Manufacturing the Same
AssigneeLG Energy Solution, Ltd.
InventorsWoo Yong Lee, Dong Myung Kim, Kyoung Won Kang
Life of this patent
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Abstract
The present disclosure relates to an electrode assembly. The electrode assembly can include a coating portion coated with an electrode active material and an electrode provided with an electrode tab without the electrode active material. The electrode can include a crack spreading prevention part. The crack spreading prevention part can include a crack spreading prevention hole formed in the electrode and an insulating coating layer provided on a circumferential surface of the crack spreading prevention hole.
Claims6
A secondary battery comprising:
- an electrode assembly;
- an electrode lead coupled to an electrode tab of the electrode assembly;
- and a battery case configured to accommodate the electrode assembly such that an end of the electrode lead extends outside the battery case when the electrode assembly is disposed therein,
- the electrode assembly comprising:
- a coating portion coated with an electrode active material, and
- an electrode with an electrode tab, the electrode tab not including the electrode active material,
- wherein the electrode comprises a crack spreading prevention part, the crack spreading prevention part comprising:
- a crack spreading prevention hole formed in the electrode, and
- an insulating coating layer provided on a circumferential surface of the crack spreading prevention hole.
A method for manufacturing a secondary battery, comprising:
- preparing an electrode comprising a coating portion coated with an electrode active material and an electrode tab having no electrode active material;
- providing a crack spreading prevention part to prevent cracks from spreading in the electrode;
- stacking the electrode and a separator alternately to form an electrode assembly;
- coupling an electrode lead to the electrode tab of the electrode provided in the electrode assembly;
- and
- accommodating the electrode assembly in a battery case such that an end of the electrode lead extends outside the battery case,
- wherein the crack spreading prevention part is provided on an interface between the coating portion and the electrode tab.
Dependencies are inferred from the claim text.