Secondary battery and method for manufacturing the same
AssigneeSK Innovation Co., Ltd.
InventorHee-Gyoung Kang
Life of this patent
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Abstract
Disclosed are a secondary battery and a method for manufacturing the same. According to an embodiment of the present invention, there is provided a secondary battery, including: an exterior material which includes a pouch film and a sealing portion formed at an outer side of the pouch film; and an electrode assembly which includes a plurality of electrode bodies laminated with a separator interposed therebetween and are packaged by the exterior material, wherein a pair of forming portions are formed within the pouch film to house the electrode assembly, and a predetermined interval is formed between the pair of forming portions.
Claims17
A secondary battery, comprising:
- an electrode assembly;
- an exterior material comprising a sealing portion, first and second forming portions for housing the electrode assembly, and an interval disposed between the first and second forming portions, the interval including a first boundary between the interval and the first forming portion and a second boundary between the interval and the second forming portion;
- and
- electrode tabs connected to the electrode assembly through welding portions;
- wherein the exterior material is folded using the first boundary and the second boundary such that the exterior material packages the electrode assembly by enclosing the electrode assembly to form three sealed sides and one non-sealed side,
- wherein a thickness of the electrode assembly is larger than a sum of a depth of the first forming portion and a depth of the second forming portion, and
- wherein at least one sealed side that does not face the non-sealed side is provided with the electrode tabs.
A secondary battery, comprising:
- an electrode assembly;
- an exterior material comprising a pair of forming portions for housing the electrode assembly, a sealing portion and an interval between the pair of forming portions;
- and
- electrode tabs connected to the electrode assembly through welding portions;
- wherein the exterior material packages the electrode assembly by enclosing the electrode assembly to form three sealed sides and one non-sealed side,
- wherein the pair of forming portions face each other in a thickness direction such that the exterior material is folded around the electrode assembly using the non-sealed side,
- wherein the interval includes a first boundary and a second boundary facing each other,
- wherein the external material is folded using the first and second boundaries and the interval is devoid of any folded area in an interior between the first boundary and the second boundary,
- wherein a thickness of the electrode assembly is larger than a sum of the depths of the pair of forming portions, and
- wherein the welding portions are formed outside of the forming portions.
Dependencies are inferred from the claim text.